Diseases Flashcards
What are the two classifications of arthritis?
- inflammatory
- non inflammatory
What are the four classifications of inflammatory arthritis?
- seropositive
- seronegative
- infectious
- crystal induced
What is inflammatory arthritis?
- clearly defined group of conditions where there is joint or tendon inflammation
- associated with abnormal blood results and imaging
- rapidly destructive if untreated
- may affect other systems
- symmetrical
- involves smaller joints of the hands and feet
- any joint with synovium is affected
How does inflammatory arthritis present?
- pain and stiffness in small joints, usually hands and feet
- reduction in grip strength
- rapid onset
- swelling of affected joints
- usually symmetrical
Describe the pathogenesis of inflammatory arthritis
- potential triggers include infections and cigarette smoking
- severity and course depend on genetic factors and presence of auto-antibodies
- main structure involved is the synovium
- synovium lines synovial joint capsules and tendon sheaths
- makes direct contact with synovial fluid which acts as a lubricant
- synovial joints include hand joints, wrists, elbows, shoulders, knees, hips, ankles and feet
What is key to the early development of rheumatoid arthritis?
Citrullination of proteins and development of autoantibodies
Describe the diagnosis of rheumatoid arthritis
- history and clinical examination
- inflammatory markers (CRP, ESR / plasma viscosity)
- autoantibodies
- imaging
Describe the clinical features of rheumatoid arthritis
- prolonged morning stiffness (>30 mins)
- involvement of small joints of hands and feet (PIPs / MCPs and MTPs)
- symmetric distribution
- positive compression tests of metacarpophalangeal (MCP) and metatarsophalangeal (MTP) joints
Describe the autoantibodies of rheumatoid arthritis
- rheumatoid factors; sensitivity 50-80%, specificity 70-80%
- anti- CCP antibodies; sensitivity 60-70%, specificity 90-99%
Describe anti-CCP
- can be present for several years prior to articular symptoms
- correlated with disease activity
- more likely to be associated with erosive damage
- associated with current or previous smoking history
- anti-CCP remains positive despite treatment
- low sensitivity; absence does not exclude disease
- higher the titre, the worse the prognosis
Describe x ray imaging in rheumatoid disease
Early disease;
- normal
- soft tissue swelling
- periarticular osteopenia
Late disease;
- erosions
- subluxation
Describe ultrasound imaging in rheumatoid disease
- increased sensitivity for synovitis in early disease
- consistently superior to clinical examination
- can detect more MCP erosions than plain x-ay in early RA
- useful in making treatment changes
Which auto-antibody is most specific for RA?
Anti-CCP antibody
Name some complications of rheumatoid arthritis
- increased cardiovascular risk
- osteopenia / osteoperosis
Name the key factors in management of rheumatoid arthritis
- early recognition and diagnosis
- early treatment with DMARDs
- importance of tight control with target remission or low disease activity
- patient education
- multidisciplinary team involvement
Name the DMARDs
- methotrexate
- sulfasalazine
- leflunomide
- hydroxychloroquine
- combination therapy with MTX, SASP and HCQ
- steroids
Describe the side effects of DMARDs
- bone marrow suppression
- infection
- liver function derangement
- pneumonitis
- nausea
Describe methotrexate
- first choice DMARD in most patients
- can be given orally or subcutaneously
- often used in combination
- teratogenic; must be stopped in females at least 3 months before conception
- need regular blood monitoring
How would you asses disease activity in rheumatoid arthritis?
- DAS28 score
- > 2.6 = remission
- > 5.1 = active disease
Describe the biologics used in rheumatoid arthritis
- anti TNF agent = infliximab, entanercept, adalimumab, certolizumab, golimumab
- t cell receptor blocker; abatacept
- b cell depletor; rituximab
- IL-6 blocker; tocilizumab
- JAK inhibitor; tofacitinib, baricitinib
Who gets biologic treatment in rheumatoid arthritis?
- tried 2 DMARDs
- DAS 28 score still >5.1
Describe the adverse effects of the biologics
- risk of infection (especially TB)
- question over risk of malignancy
- contraindicated in certain situations eg pulmonary fibrosis, heart failure
Describe osteoarthritis
- a chronic disease characterised by cartilage loss and accompanying periarticular change
- commonly referred to as ‘wear and tear’
- one of the most common causes of chronic disability in adults due to pain and altered joint function that result from characteristic pathologic changes in the joint tissues
- 8.5 million people in the UK are affected by joint pain that may be related to OA
- knees, hands and hips are the most commonly affected joints
- altered joint function by characteristic changes
- any synovial joint can be affected
Describe the pathophysiology of osteoarthritis
- metabolically active dynamic process that involves all joint tissues; cartilage, bone, synovium / capsule, ligaments and muscle
- key pathological changes include the localised loss of hyaline cartilage and remodelling of adjacent bone with new bone formation (osteophyte) at joint margins
- combination of tissue loss and new tissue synthesis indicated that it is a repair process of synovial joints
- a variety of joint traumas may trigger the need to repair
- defined as a common complex disorder with multiple risk factors
- a slow but efficient repair process - structurally disordered but functional joint repair
What are the two types of osteoarthritis?
- localised
- generalised
Localised OA can affect what?
- hips
- knees
- finger interphalangeal joints
- facet joint of the lower cervical and lower lumbar spines
Generalised OA can affect what?
- defined as OA at either the spinal or hand joints and in at least 2 other joint regions
- subset involving DIP joints, thumb bases (1st CMC and trapezoscaphoid joints), first MTP joint, lower lumbar and cervical facet joints, knees, hips
- the clinical marker is the presence of multiple heberdens nodes
Describe the clinical presentation of OA
- extremely variable
- pain worse with joint use
- morning stiffness lasting less than 30 minutes
- inactivity gelling
- instability
- poor grip in thumb OA
Describe the examination features of OA
- joint line tenderness - most appreciate in the knee joint
- crepitus - cartilage worn out so bones rub against each other
- bony swelling
- deformity
- limitation of motion
There is usually sparing of what joints in OA?
MCP joints
Describe the features of knee OA
- osteophytes, effusions, crepitus and restriction of movement
- genu varus and valgus deformities
- bakers cysts; bulging of synovial tissue to the back of the knee
Pain in the lateral aspects of the hip or buttocks is most likely radiated from where?
The back
Where could pain from the hip be felt?
- pain may be felt in groin or radiating to knee
- pain felt in hip may be radiating from the lower back
- hip movements restricted
Where could pain from the spine be felt?
- cervical; pain and restriction of movement, occipital headaches may occur
- osteophytes may impinge on nerve roots
- lumbar; osteophytes can cause spinal stenosis if they encroach on the spinal canal
Describe diagnosis of OA
- clinical based on signs and symptoms
- no specific laboratory tests
- radiological imaging
- plain xrays
- MRI scans
- ultrasound scans
Describe x ray findings of OA
- marginal osteophytes
- joint space narrowing
- subchondral sclerosis
- subchondral cysts
Describe management of OA
- education
- lifestyle management
- physiotherapy
- occupational therapy
- analgesia
- local intra-articular steroid injections, work especially well in the knee, only if there is evidence of active osteoarthritis
- avoid opiates as it is chronic condition and can be addictive
Describe surgical management of OA
- joint replacement; a select group of patients
- arthroscopic surgery to remove loose bodies etc
- trapezectomy; last resort
What are crystal arthropathies?
- a diverse group of disorders characterised by the deposition of various minerals in joints and soft tissues, leading to inflammation
- gout monosodium urate crystals
- pseudogout calcium pyrophosphate crystal deposition
- hydroxyapatite basic calcium phosphate deposition
- end result is the same; intense inflammatory reaction
What is gout?
Defined as a potentially disabling and erosive inflammatory arthritis caused by the deposition of monosodium urate crystals into joints and soft tissues
Describe increased urate production
- inherited enzyme defects
- myeoloproliferative / lymphoproliferative disorders; fast turnover
- psoriasis; fast turnover
- haemolytic disorders
- alcohol (beer, spirits)
- high dietary purine intake (red meat, seafood, corn syrup) most common cause
Describe reduce urarte excretion
- chronic renal impairment
- volume depletion eg heart failure
- hypothyroidism
- diuretics
- cytotoxic eg cyclosporin
What are gouty tophi?
Aggregates of uric acid crystals
Chronic tophaceous gout
- chronic joint inflammation
- often diuretic associated
- high serum uric acid
- tophi
- may get acute attacks
Describe investigations for gout
- serum uric acid (may be normal during acute attack)
- raised inflammatory markers
- polarised microscopy of synovial fluid
- renal impairment (may be cause or effect)
- x rays
- you must aspirate joint; red hot and swollen and acute so need to exclude septic arthritis
Describe the treatment of acute attacks of gout
- NSAIDs
- colchicine; reduce inflammation, reduced microtubules, many side effects
- steroids
- takes about 48 hours to resolve
Describe prophylactic treatment of gout
- xanthine oxidase inhibitors; allopurinol, febuxostat
- uricosuric drugs; sulfinpyrazone, probenecid, benxbromarone
- il-1 inhibitors; canakinumab
Why do you always start prophylactic therapy alongside NSAIDs or colchicine?
Starting prophylactic treatment can cause a flare up. Any sudden rise or fall in uric acid will cause gout symptoms
Describe indications for prophylactic therapy
- two or more attacks of gout in a year in spite of lifestyle modifications
- presence of gouty tophi or signs of chronic gouty arthritis
- uric acid calculi; kidney stones, needs long term treatment
- chronic renal impairment
- heart failure where unable to stop diuretics
- chemotherapy patients who develop gout
Describe calcium pyrophosphate deposition disease
- commoner in elderly
- chondrocalcinosis increases with age
- related to osteoarthritis
- affects fibrocartilage; knees, wrists, ankles
- calcification of cartilage, inflammatory reaction
- acute attacks are due to calcium pyrophosphate crystals (pseudogout)
- marked raise in inflammatory markers
Describe calcium pyrophosphate crystals
- envelope shaped
- mildly positively birefringent on polarising microscopy
Describe associations with calcium pyrophosphate crystals
- hyperparathyroidism
- familial hypocalciuric hypercalcaemia
- haemochromatosis
- haemosiderosis
- hypophosphatasia
- hypomagnesemia
- hypothyroidism
- gout
- neuropathic joints
- aging
- amyloidosis
- trauma
Describe treatment with CPPD
- NSAIDs
- colchicine
- steroids; if intolerant of NSAIDs
- rehydration
- no prophylaxis, degenerative condition
- symptomatic treatment
Describe hydroxyapatite
- milwaukee shoulder
- hydroxyapatite crystal deposition in or around the joint
- release of collagenases, serine proteinases and IL-1
- acute and rapid deterioration
- females, 50-60 years
- much rarer
- destructive arthritis in the shoulders
Describe the treatment of hydroxyapatite
- NSAIDs
- intra-articular steroid injection
- physiotherapy
- partial or total arthroplasty
- surgery is there is a lot of damage
Describe soft tissue rheumatism
- general term to describe pain that is caused by inflammation / damage to ligaments, tendons, muscles or nerve near a joint rather than either the bone or cartilage
- pain should be confined to a specific site eg shoulder, wrist etc
- more generalised soft tissue pain; consider fibromyalgia
- general term used to describe pain around the joint but not the bone or cartilage
- usually in one site
- if it is widespread consider chronic pain syndrome such as fibromyalgia
Describe some shoulder problems
- commonest area for soft tissue pain
- adhesive capsulitis
- rotator cuff tendinosis
- calcific tendonitis
- impingement
- partial rotator cuff tears
- full rotator cuff tears
- adhesive capsulitis; frozen shoulder
Describe investigations and treatment of soft tissue
- usually unnecessary
- xray; calcific tendonitis
- MRI if fails to settle
- identify precipitating factors
- pain controls
- rest and ice compressions
- PT; always first line
- steroid injections
- surgery
Describe joint hypermobility syndrome
- females > males
- general or local
- rare genetic syndromes eg marfans, ehlers danlos syndrome
- usually presents in childhood or 3rd decade
- diseases of connective tissues
- pain arises from the hypermobile joints but not in all patients
Describe symptoms and signs in joint hypermobility syndrome
- joint pains especially after exercise / physical work
- joint stiffness
- foot and ankle pain
- neck and backache
- frequent sprains and dislocations
- thin stretchy skin
Describe the modified beighton score
- > 10 degrees hyperextension of the elbows
- passively touch the forearm with the thumb, while flexing the wrist
- passive extension of the fingers or a 90 degree or more extension of the fifth finger
- knees hyperextensions > 10 degrees
- touching the floor with the palms of the hands when reaching down without bending knees
- hypermobility if > 4/ 9 criteria met
Describe treatment of hypermobility
- patient education
- physiotherapy
- analgesia as required
- surgery is not recommended
What are connective tissue diseases?
- conditions associated with spontaneous overactivity of the immune system
- specific auto-antibodies are present
- they evolve over months to years sometimes leading to organ failure and death
Name some examples of connective tissue diseases
- systemic lupus erythematosus
- sjogrens syndromes
- systemic sclerosis
- dermatomyositis / polymyositis
- anti-phospholipid syndrome
What is SLE?
- systemic autoimmune condition that can affect almost any part of the body
- immune system attacks cells and tissue resulting in inflammation and tissue damage
- immune complexes form and precipitate causing further immune response
Who gets SLE?
- prevalence around 20:100,000
- female to male ratio 9:1 commonly presenting in childbearing years
- commoner and more severe in those afro-caribbean, hispanic american, asian and chinese ethnicity
- commoner in smokers, less common in men but when present is usually severe
Describe the pathogenesis of SLE
- essentially in patients who have a genetic predisposition and who are exposed to precipitating factors, the immune system to loose its normal regulation mechanisms
- apoptosis becomes deregulated and ineffective which means the apoptotic cells are removed less quickly and efficiently which results in cell contents circulating longer than normal which then results in the immune system recognising the cell contents as antigens so begins generating an immune response against these
- auto-antibodies are generated, over time these antibodies begin to attack cell contents
- this process generates chronic inflammation and damage over time
- antigens and auto-antibodies from immune complexes which can be deposited in areas commonly in basement membrane of the kidneys
What is an important complication of SLE?
Glomerular nephritis, dipstick the urine
Describe the cutaneous features of SLE
- subacute cutaneous or discoid lupus
- acute cutaneous lupus
- non scarring alopecia
- oral ulceration
- lupus rashes is often photosensitive, precipitated by UV light exposure
Describe the neurological presentations of SLE
- delirium
- psychosis
- seizure
- headache
- cranial nerve disorder
Name haematological complications of SLE
- leukopenia
- thrombocytopenia
- haemolytic anaemia
- lymphadenopathy
Name renal complications of SLE
- proteinuria >0.5 g in 24 hours
- biopsy proven nephritis
- red cell casts
- looking for evidence of blood or protein present in the urine
Describe ANA
- anti-nuclear antibody
- positive in titre of 1:80 in almost all SLE patients
- titres of less than 1:160 are present in up to 20% of the healthy population
- positive in a lot of other diseases, not diagnostic
Describe dsDNA
- anti-double stranded DNA antibody
- present in 60% of lupus patients
- specific for SLE
- titre correlates with disease activity
- associated with lupus nephritis
- much more specific, rarely falsely positive
- negative doesn’t rule out lupus, just need other clear indications
Describe APLS
- antiphospholipid antibodies
- lupus anticoagulant
- anti-cardiolipin antibodies
- anti-beta2glycoprotein antibodies
- associated with venous and arterial thrombosis and recurrent miscarriage
- livedo reticularis
- associated with lupus but can also be a primary condition
Describe anti-Ro antibody
- can be associated with neonatal lupus and congenital heart block
Describe anti Sm antibody
- highly specific for lupus
What antibody is most specific for lupus?
anti-double stranded DNA antibody
What is the management for all patients with SLE?
- sun protection measures
- hydroxychloroquine
- minimise steroid use
- monitor disease activity using SLEDAI score
Describe the symptoms of sjogrens
- dry eyes, gritty feeling
- dry mouth
- dry throat
- vaginal dryness
- bilateral parotid gland enlargement
- joint pains
- fatigue
- unexplained increase in dental caries
Who generally gets sjogrens?
Generally middle aged women
Describe the immunology of sjogrens
- anti ro
- anti la
- may also have raised IgG (if tested) and raised plasma viscosity / ESR
What is systemic sclerosis / scleroderma
- systemic sclerosis is a multisystem autoimmune disease characterised by vasculopathy, autoimmunity and fibrosis
- classic symptoms of raynauds, skin thickening, difficulty swallowing, FGORD, telangiectasia, calcinosis +/- SOB
What is diffuse cutaneous systemic sclerosis?
- skin involvement on extremities above and below elbows and knees (plus face and trunk)
What is limited cutaneous systemic sclerosis?
- skin involvement on extremities and only below elbows and knees (plus face)
Describe the usual timing of problems in patients with systemic sclerosis (diffuse cutaneous variant)
- raynauds, digital ischaemia
- joint contractures
- skeletal myopathy
- interstitial lung disease
- myocardial involvement
- renal crisis
Describe the usual timing of problems in patients with systemic sclerosis (limited cutaneous variant)
- raynauds, digital ischaemia
- oesophageal disease
- pulmonary hypertension
- malabsorption
Describe the facial changes in systemic sclerosis
- small mouth with ‘puckering’
- beaked nose
- thickened / tight skin; lack of wrinkles
- telangiectasia
Describe systemic sclerosis related GI complications
- difficulty swallowing; dysphagia
- GORD
- gastric antral vascular ectasia
- small intestinal bacterial overgrowth
- malabsorption
- fluctuating bowel habit
- faecal incontinence
Describe cardio / respiratory complications of systemic sclerosis
- interstitial lung disease
- pulmonary arterial hypertension
- myocardial disease
Describe renal complications of systemic sclerosis
- scleroderma renal crisis
- non specific progressive renal dysfunction
What is raynauds phenomenon?
Classically triphasic
- blanching; white
- acrocyanosis (purple / blue)
- reactive hyperaemia (redness)
Describe treatment of vasculopathy / raynauds
- CCB; nifedipine usually first line treatment
- others; fluoxetine, ARBs, nitrates
- PDE-5 inhibitor; sildenafil
- prostacyclin infusion; iloprost
- endothelin receptor antagonist; bosentan
in order of primary raynauds to recurrent digital ulcers
Describe the five groups of pulmonary hypertension
- pulmonary arterial hypertension
- PH due to left heart disease
- PH due to lung disease and or hypoxaemia
- PH due to chronic thromboembolism
- OH with unclear multifactorial mechanisms
Describe symptoms of pulmonary hypertension
- predominantly shortness of breath on exertion
- increased risk with; telangiectasia, anti centromere antibody, increased duration of disease
- it is essential to screen for PH yearly
Describe systemic sclerosis and pulmonary hypertension
- true pulmonary arterial hypertension
- probably a vasculopathy
- treatment (aimed at slowing progression); PDE5 inhibitors, ERA, eproprostenol infusions, oxygen
- progressive complication ultimately leading to right heart failure
Describe signs and symptoms of pulmonary fibrosis
- progressive SOB
- usually associated with a cough
- bilateral crackles on chest examination
- pulmonary function tests (must be done yearly)
- restrictive pattern, reduced FVC, reduced transfer factor
- hardening of lung tissue, less pliable and more inefficient
Describe treatment of pulmonary fibrosis
- mycophenolate mofetil (immunosuppression)
- rarely cyclophosphamide (for aggressive disease)
- rituximab as a second line agent
- nintedanim (antifibrotic)
- lung transplant is a theoretic but rare transplant
Describe systemic sclerosis and renal disease
- renal crisis
- associated with anti RNA polymerase 3 antibody
- usually early in disease (presenting feature)
- high dose of steroids puts people at risk
- uncontrolled hypertension with proteinuria and rapidly worsening renal function
- treated by ACE inhibitors (sometimes need dialysis)
- incidence much less as we use less steroids now
Describe skin fibrosis treatments
- methotrexate
- mycophenolate
Define spondyloarthropathy
A family of inflammatory arthritides characterised by involvement of both the spine and joints, principally genetically predisposed (HLA B27 positive) individuals
Describe HLA B27
- associated with ankylosing spondylitis, reactive arthritis, crohns disease, uveitis
- background prevalence varies depending on geographical location
- not a useful screening or diagnostic test unless patients also have symptoms
Name the subgroups of spondyloarthritis disease subgroups
- ankylosing spondylitis
- psoriatic arthritis
- reactive arthritis
- enteropathic arthritis
Describe mechanical back pain
- worsened by activity
- typically worse at end of day, better with rest
Describe inflammatory back pain
- worse with rest
- better with activity, significant early morning stiffness (>30 minutes)
Describe the shared rheumatological features of the spondyloarthropathies
- sacroiliac and spinal involvement
- enthesitis; inflammation at insertion of tendons into bones eg achilles tendinitis, plantar fasciitis
- inflammatory arthritis; oligoarticular, asymmetric, predominantly lower limb
- dactylitis; inflammation of entire digit
Describe the shared extra-articular features of spondyloarthropathies
- ocular inflammation (anterior uveitis, conjunctivitis)
- mucocutaneous lesions
- rare aortic incompetence or heart block
- no rheumatoid nodules
- heart features are rare
What is ankylosing spondylitis?
- chronic systemic inflammatory disorder that primarily affects the spine
- late adolescence or early adulthood
- more common in men 3-5:1
Describe the modified new york criteria for diagnosis of ankylosing spondylitis 1992
- limited lumbar motion
- lower back pain for 3 months; improved with exercise, not relieved by rest
- reduced chest expansion
- bilateral, grade 2 to 4 , sacroilitis on x ray
- unilateral, grade 3 to 4, sacroilitis on x ray
- radiological changes are later so this criteria doesnt pick up patients with early disease
Describe the ASAS classification criteria for axial spondyloarthritis (SpA)
- in patients with > 3months back pain and age of onset <45 years
- sacroiliitis on imaging and > 1 spa feature
OR - HLA B27 positive and >2 other spa features
Describe spa features
- inflammatory back pain
- arthritis
- enthesitis (heel)
- uveitis
- dactylitis
- psoriasis
- crohns / colitis
- good response to NSAIDs
- Fhx
- HLA B27
- elevated CRP
Describe the clinical features of ankylosing spondylitis
- back pain (neck, thoracic, lumbar, sacroiliac)
- enthesitis
- peripheral arthritis (shoulders, hips)
- extra-articular features; anterior uveitis, cardiovascular involvement, pulmonary involvement, asymptomatic enteric mucosal inflammation, neurological involvement, amyloidosis
Describe the ‘A’ disease of ankylosing spondylitis
- axial arthritis
- anterior uveitis
- aortic regurgitation
- apical fibrosis
- amyloidosis / IgA nephropathy
- achilles tendinitis
- plantar fasciitis
How does the spine change with ankylosing spondylitis?
- syndesmophytes (fusion of the vertebrae)
- loss of lumbar lordosis
Describe diagnosis of ankylosing spondylitis
- history
- examination; tragus / occiput to wall, chest expansion, modified schober test
- bloods; inflammatory parameters (ESR, CRP, PV), HLA B27
- xrays; sacroiliitis, syndesmophytes, bamboo spine
Describe the occiput to wall test
- patient stands with their back, buttocks and heels against the wall
- then tries to put head / neck against the wall, restricted in most patients with disease
Describe the schober test
- a measure of lumbar sacral fusion
- patient tries to touch toes without bending the knees, restricted in SA
Describe the imaging of ankylosing spondylitis
- xrays; usually show changes after a long period of time
- eg sacroiliac sclerosis / vertebral fusion / erosions
Describe the ankylosing spondylitis spine
- bone density; normal in early disease, reduced in late disease
- shiny corners
- flowing syndesmophytes
- fusion (bamboo spine)
Describe the spine of osteoarthritis
- normal bone density
- reduced joint space
- subchondral sclerosis
- subchondral cyst formation
- osteophyte formation associated with neural foraminal narrowing
What is psoriatic arthritis?
Inflammatory arthritis associated with psoriasis, but 10-15% of patients can have PsA without psoriasis
Describe the clinical subgroups of psoriatic arthritis
1 confined to distal interphalangeal joints (DIP) hands / feet
- symmetric polyarthritis (similar to RA)
- spondylitis (spine involvement) with or without peripheral joint involvement
- asymmetric oligoarthritis with dactylitis
- arthritis mutilans
Describe the clinical features of psoriatic arthritis
- nail involvement (pitting, onycholysis)
- dactylitis
- enthesitis; achilles tendinitis, plantar fasciitis
- extra articular features (eye disease)
Describe the diagnosis of psoriatic arthritis
- history
- examination
- bloods; inflammatory parameters, negative RF
- xrays; marginal erosions and whiskering, pencil in cup deformity, osteolysis, enthesitis
What is reactive arthritis?
- infection induced systemic illness characterised primarily by an inflammatory synovitis from which viable microorgansism cannot be cultured
- symptoms 1-4 weeks after infection
- most common infections; urogenital eg chlamydia, enterogenic eg salmonella, shigella, yersinia
- young adults (20-40)
- equal sex distribution
- HLA B27 positive
Describe reiters syndrome
- a form of reactive arthritis
- triad; urethritis, conjunctivitis / uveitis / iritis, arthritis
Describe clinical features of reactive arthritis
- general symptoms (fever, fatigue, malaise)
- asymmetrical monoarthritis or oligoarthritis
- enthesitis
- mucocutaneous lesions; keratoderma blenorrhagica, circinate balanitis, painless oral ulcers, hyperkeratotic nails
- ocular lesions (unilateral or bilateral), conjunctivitis, iritis
- visceral manifestations; mild renal disease, carditis
Describe diagnosis of reactive arthritis
- history
- examination
- bloods; inflammatory parameters, FBC, U and Es, HLA B27
- cultures
- joint fluid analysis
- x ray of affected joints
- ophthalmology opinion
Describe enteropathic arthritis
- associated with inflammatory bowel disease eg crohns, ulcerative colitis, patients with inflammatory bowel disease
- patients present with arthritis in several joint, especially the knees, ankles, elbows and wrists, and sometimes in the spine, hip or shoulders
- 20% of patients with crohns will have sacroiliitis
- worsening of symptoms during flare-ups of inflammatory bowel disease
Describe the clinical symptoms of enteropathic arthritis
- GI; loose, watery stool with mucous and blood
- weight loss, low grade fever
- eye involvement (uveitis)
- skin involvement (pyoderma gangrenosum)
- enthesitis (achilles tendonitis, plantar fasciitis, lateral epicondylitis)
- oral; apthous ulcers
Describe investigations for enteropathic arthritis
- upper and lower GI endoscopy with biopsy showing ulceration / colitis
- joint aspirate; no organisms or crystals
- raised inflammatory markers; CRP, PV
- x ray / MRI showing sacroiliitis
- USS showing synovitis / tenosynovitis
Describe pharmacological management of spondyloarthropathies
- NSAIDs
- corticosteroids / joint injections
- topical steroid eyedrops
- disease modifying drugs (methotrexate, sulfasalazine, leflunomide)
- anti TNF in severe disease unresponsive to NSAIDs and methotrexate (infliximab, etanercept, adalimumab, golimumab, certolizumab)
- secukinumab (anti-IL17) only for PsA and AS
Describe non-pharmacological management of spondyloarthropathies
- physio
- occupational therapy
- orthotics, chiropodist
Inflammatory myopathies are characterised by what?
Characterised by weakness
Polymyalgia rheumatic are characterised by what?
By pain and stiffness
Fibromyalgia is characterised by what?
By pain and fatigue
How do muscle diseases present?
- muscle pain (myalgia)
- muscle weakness / tiredness
- stiffness
- abnormal blood tests
- other organ features
What is myopathy?
- a disease of the muscle in which the muscle fibres do not function properly
- this results in muscular weakness
- means muscle disease
Describe polymyositis and dermatomyositis
- idiopathic inflammatory myopathies
- autoimmune
- prevalence 1/100,000
- female:male 2:1
- peak incidence ages 40-50 years
- increased incidence of malignancy
Describe the clinical features of polymyositis and dermatomyositis
- muscle weakness
- insidious onset, worsening over months
- usually symmetrical, proximal muscles
- often specific problems eg difficulty brushing hair, climbing stairs
- myalgia in 25-50% (usually mild)
- grottons sign
- heliotrope rash
- shawl sign
Describe other organ involvement of polymyositis and dermatomyositis
- lung; ILD, respiratory muscle weakness
- oesophageal; dysphagia
- cardiac; myocarditis
- other; fever, weight loss, raynauds phenomenon, inflammatory arthritis
Describe the malignancy risk in polymyositis and dermatomyositis
- 15% incidence in dermatomyositis
- 9% polymyositis
- ovarian, breast, stomach, lung, bladder and colon cancers
- risk greater in men over 45 years
Describe the examination of polymyositis and dermatomyositis
- confrontational testing; direct testing of power
- isotonic testing; 30 second sit to stand test
- wasting of muscles
Describe investigations of polymyositis and dermatomyositis
Blood test
- muscle enzymes eg CK
- inflammatory markers
- electrolytes, calcium, PTH, TSH
- autoantibodies; ANA, anti-jo-1, myositis specific antibodies
- electromyography (EMG)l increased fibrillations, abnormal motor potentials, complex repetitive discharges
Describe diagnosis of polymyositis and dermatomyositis
- muscle biopsy; definitive test. perivascular inflammation and muscle necrosis
- MRI; muscle inflammation, oedema, fibrosis and calcification
- scarring or atrophy of muscle
Describe treatment of polymyositis and dermatomyositis
- corticosteroids
- immunosuppression; azathioprine, methotrexate, ciclosporin, IV immunoglobulin, rituximab
What is the main symptoms in inflammatory myositis?
Muscle weakness
What is the most definitive diagnostic test for polymyositis?
Muscle biopsy
What is polymyalgia rheumatica?
- occurs almost exclusively in those over 50 years
- prevalence of approx 1%
- incidence higher in nothern regions
- associated with temporal arteritis / giant cell arteritis (15%)
Describe the clinical manifestations of polymyalgia rheumatica
- ache in shoulder and hip girdle
- morning stiffness
- usually symmetrical
- fatigue, anorexia, weight loss and fever may occur
- reduced movement of shoulders, neck and hips
- muscle strength is normal
- usually progressive over a couple of weeks to very debilitating symptoms like struggling to get out of bed in the morning
Describe temporal arteritis / giant cell arteritis
- granulomatous arteritis of large vessels
- features; headache, scalp tenderness, jaw claudication, visual loss (amaurosis fugax), tender, enlarged, non-pulsatile temporal arteries
- form of large vasculitis affecting arteries
- dark curtain descending over one eye; can lead to permanent vision loss
Describe diagnosis of temporal arteritis
- raised ESR, plasma viscosity, CRP
- temporal artery biopsy
- temporal artery USS
Describe treatment of temporal arteritis
- rapid and dramatic response to low dose steroids
- steroid dose; PMR; start at prednisolone 15mg daily, GCA; start at prednisolone 40-60mg daily
- gradual reduction in steroid dose over 18 months to 2 years
What is fibromyalgia?
- common cause of chronic musculoskeletal pain
- not associated with inflammation
- commonest cause of musculoskeletal pain in women
- 22-50 years
- prevalence of 2-5%
- commoner in women
- may begin after emotional or physical trauma
Describe symptoms of fibromyalgia
- chronic headaches
- sleep disorders
- dizziness
- cognitive impairment
- memory impairment
- anxiety
- depression
- myofascial pain
- fatigue
- twitches
- morning stiffness
- problems urinating
- vision problems
- joint dysfunction
- pain
- weight gain
- cold symptoms
- multiple chemical sensitivity
- chest pain
- nausea
- dysmenorrhoea
Describe the ACR proposed diagnostic criteria for fibromyalgia (2010)
- fibromyalgia can be diagnosed if;
- patient experiences widespread pain and associated symptoms
- symptoms have been present at same level for >3 months
- no other condition otherwise explains the pain
Described associated symptoms of fibromyalgia
- unrefreshed sleep
- cognitive symptoms
- fatigue
- other somatic symptoms
Describe a treatment of fibromyalgia
- patient education
- multi disciplinary response
- graded exercise programme
- cognitive behavioural therapy
- complementary medicine eg acupuncture
- anti depressants eg tricyclics, SSRIs
- analgesia
- gabapentin and pregabalin
What is vasculitis?
- vasculitis is inflammation of blood vessels; arteries, arterioles, veins, venules or capillaries
- it can often lead to inflammation, ischaemia and or necrosis of tissue
- clinical manifestations are diverse and depend on the size and depend on the size and location of the involved vessels and the degree of the organ dysfunction and inflammation
Describe the aetiology of vasculitis
- may be primary or secondary
- primary vasculitis results from an inflammatory response that targets the vessel walls and has no known cause
- secondary vasculitis may be triggered by an infection, a drug or a toxin or may occur as part of another inflammatory disorder or cancer
Describe the clinical features of vasculitis
- the presentation of vasculitis depends largely on which vessel it affects
- systemic symptoms such as fever, malaise, weight loss and fatigue are common to all vasculitides
Name the classifications of vasculitis
- medium vessel vasculitis; polyarteritis nodosa, kawasaki disease
- ANCA associated small vessel vasculitis
- large vessel vasculitis; takayasu arteritis, giant cell arteritis
- immune complex small vessel vasculitis
Describe large vessel vasculitis
- main causes of large vessel vasculitis are takayasu arteritis (TA) and giant cell arteritis (GCA)
- granulomatous infiltration of the walls of the large vessels
- two main conditions; TA and GCA
Describe takayasus arteritis
- TA under 40 years old commoner in females
- more prevalent in asian populations
- claudication
- bruit, with the most common location being the carotid artery
- blood pressure difference of extremities; pulseless disease
- angiogram
- mainly the arm; so the pain in the arm a common complaint
- inflammation of vessel, less blood supply so when exercised there is pain
Describe giant cell arteritis
- GCA over 50 years
- typically causes temporal arteritis; unilateral acute temporal headache, scalp tenderness, temporary visual disturbances / blindness and or jaw claudication
- temporal arteries may be prominent with reduced pulsation
- strong association with polymyalgia rheumatica
- more common in late 60s and later
- pulse can be absent
Describe investigations of giant cell arteritis
- ESR or plasma viscosity and CRP raised
- temporal artery biopsy (skip lesion can occur so biopsy may be negative)
- ultrasound
- PET CT or CT angiogram
- biopsy is GOLD STANDARD
Describe the management of large vessel vasculitis
- start 40-60mg prednisolone
- steroid sparing agents may be considered eg leflunamide, methotrexate
- tocilizumab
- not beyond 2 years
What is granulomatosis with polyangiitis (GPA)?
- commoner in those of nothern european descent
- male to female ratio 1.5:1
- typically aged 35-55 years
- incidence 10/million
- prevalence 250/million
- constitutional symptoms and arthralgia are common
Describe ENT features of GPA
- sinusitis
- nasal crusting
- epitaxis
- mouth ulcers
- sensorineural deafness
- otitis media and deafness
- saddle nose due to cartilage damage from ischaemia
- sub glottic inflammation
Describe ocular features of GPA
- conjunctivitis
- episcleritis
- uveitis
- optic nerve vasculitis
- retinal artery occlusion
- proptosis
Describe respiratory features of GPA
- cough
- haemoptysis
- pulmonary infiltrates
- diffuse alveolar haemorrhage
- cavitating nodules on CXR
Describe cutaneous features of GPA
- palpable purpura
- cutaneous ulcers
Describe renal features of GPA
- necrotising glomerulonephritis
Describe nervous system features of GPA
- mononeuritis multiplex
- sensorimotor polyneuropathy
- cranial nerve palsies
What is henoch-schonlein purpura (HSP)?
- HSP is an acute immunoglobulin A (IgA) mediated disorder
- generalised vasculitis involving the small vessels of the skin, the GI tract, the kidneys, the joints and rarely, the lungs and the CNS
- approx 75% of cases occur in children ages 2-11 years, rare in infants
Describe the presentation of HSP
- purpuric rash typically over buttocks and lower limbs
- colicky abdominal pain
- bloody diarrhoea
- joint pain +/- swelling
- renal involvement (50%)
Describe investigations for vasculitis
- urine dipstick
- FBC, liver and renal profile, inflammatory markers
- ANCA and specific antibodies, connective tissue disease screen, compliment levels
- imaging investigations chest x ray and or CT scan
- nerve conduction tests
- tissue biopsy
Describe the management of HSP
- usually self limiting
- symptoms tend to resolve within 8 weeks
- relapses may occur for months to years
- essential to perform urinalysis to screen for renal involvement
Describe simple backache
- presents age 20-55
- lumbosacral region, buttocks and thighs
- pain mechanical in natures; varies with time and activity
- patient well
- prognosis good; 90% better in 6 weeks
- most common back pain
Describe nerve root pain
- unilateral leg pain> back pain
- pain radiates to foot or toes
- numbness and paraesthesia in same distribution
- nerve irritation signs
- motor, sensory or reflex changes in one nerve root
- prognosis reasonable; 50% recover from acute attack in 6 weeks
- can have no back pain at all
- can go to upper parts of the leg, depends on nerve root
Name some serious spinal pathology
- emergency; cauda equina syndrome, recent onset flaccid foot
- urgent; tumours, spinal infection, inflammatory, deformity
Name red flags for serious spinal pathology
- age <20 and > 55
- violent trauma
- constant, progressive non-mechanical pain
- severe night pain
- thoracic pain
- cancer
- systemic steroids, premature menopause, DMARDs
- TB/IV drug abuse / HIV
- systemically unwell
- unexplained eight loss
- widespread neurological changes
- structural deformity
Describe cauda equina syndrome
- saddle anaesthesia (anus, perineum or genitals)
- difficulty with micturition
- loss of anal sphincter tone or faecal incontinence
- widespread or progressive motor weakness in the legs or gait disturbance
- unilateral leg pain that progresses to bilateral leg pain
- or can have back pain only numbness about buttocks, altered feeling with toilet paper, loss of sensation when passing urine, leaking urine or recently using incontinence pads, not knowing whether bladder is empty or full, no control over bowel movements, a change in ability to achieve erection or ejaculation or a change in sexual organs during or after sexual intercourse
Describe inflammatory disorders and back ache
- gradual onset
- marked morning stiffness
- persisting limitation of spinal movement in all directions
- peripheral joint involvement
- iritis, skin rashes, colitis, urethral discharge
- family history
Describe the subjective history of back pain
- site / nature of symptoms
- history of presenting condition
- past medical history
- drug history
- social history
- diagnostic triage
Describe objective examination of back pain
- willingness to move / ease of movement
- posture
- spinal movement
- motor power / sensation / reflexes
- nerve stretch; femoral, sciatic
- neurological examination if symptoms below the buttock
Describe management of back pain
- diagnosis / prognosis
- advice
- drugs
- referral; physio, x ray / MRI, surgical opinion, pain management
Describe pharmacological treatment of back pain
- NSAIDs first line then weak opiates with or without paracetamol
- nerve root pain; gabapentin, pregabalin, amitriptyline (also helps with sleep)
- topical treatments; capsaicin cream, menthol in aqueous solution
Describe advice given to patients with nerve root pain
- keep moving
- try to stay at work
- restrict rather than avoid activity
- exercises can help but are direction specific
- weight control
- ergonomic advice
Describe exercises to suggest to patients where bending aggravates the pain
- those who complain of pain when sitting, driving, putting socks on etc
- spend more time standing
- short walks regular basis
- stand and put hands at hip pockets and bend backwards, keep knees and hips straight
- feels more comfortable to lean backwards, repeat movement 20-30 times
- pain should start to be abolished from furthest away from the spine first
- lie face down on bed or floor and straightening elbows and lifting up chest, legs still on floor
Describe exercises for patients in which bending relieves pain
- fine when sitting, worse with standing
- ask them to lie on back with knees bent, feet resting on bed, draw knees one at a time towards the shoulders 10-2 movements then both knees towards shoulders 10-20 movements
- can sit towards edge of chair and try to touch toes or lift knees one at a time towards shoulders, not easy to do
- NHS inform
What do patients present with to their gp for back ache?
- pain; localised, lumbar
- referred pain eg sciatica
- stiffness
- loss of sleep
- loss of function; walking, lifting, carrying, hence affects ability to work
Describe the history / enquiry for back pain
- SOCRATES for pain; type, radiates / localised
- loss of function; subjective
- trauma; recent / past
- previous surgery
- symptoms suggesting other pathology eg urinary tract, GI, resp, systemic illness (virus, TB etc)
Describe the physical examination for back pain
- look; how the patient walks in and out, deformity
- feel; spinal tenderness, paravertebral muscles, get the patient to show you where
- move; flexion, extension, lateral flexion, SLR, tone, power, reflexes, sensation in legs if indicated
When would a MRI be indicated for back pain?
- only if red flags or if considering surgery (non resolving sciatica, spinal stenosis)
Name causes for back pain
- mechanical / non specific; >90%
- tumour / metastases - 0.7%
- ankylosing spondylitis - 0.3%
- infection - 0.01%
Name the yellow flags for back pain
- low mood
- high levels of pain / disability
- belief that activity is harmful
- low educational level
- obesity
- problem with claim / compensation
- job dissatisfaction
- light duties not available at work
- lots of lifting at work
Describe GP management of back pain
- explanation
- reassurance
- encourage to mobilise
- cultivate positive mental attitude
- analgesia; paracetamol, opiates
- NSAIDs short term
- muscle relaxants eg diazepam, short term
- physio
- osteopathy and chiropractic
- referral
Describe referred leg pain
- dull / knawing
- buttock / thigh
- rarely below knee
- ill defined sensory symptoms
Describe leg pain - root
- sharp / shooting / electric
- invariably below the knee to foot and ankle
- anatomical sensory / motor symptoms
- sciatica
Describe neurological symptoms of the leg
- paraesthesia
- numbness
- weakness
Describe neurological symptoms of the bowel /bladder
- loss of motor or sensory function
- not constipation
- not urinary frequency
Name bowel / urinary symptoms of cauda equina syndrome
- incontinence
- loss of control
- awareness
- perineal / saddle anaesthesia
- bilateral / unilateral / no leg symptoms
Name causes of referred back pain
- peptic ulcer disease
- gall bladder
- pancreatic
- renal
- uterine / ovarian
- colonic
Describe overt pain behaviour
- guarding
- bracing
- rubbing
- grimacing
- sighing
Describe behavioural responses (waddell)
- superficial / non anatomical tenderness
- simulation; axial loading / rotation
- distraction - SLR etc
- over reaction to examination
- regional; sensory disturbance, giving way
A technetium scan shows what?
It reflects osteoblast activity
Describe acute osteomyelitis
- mostly post traumatic / open = inoculation
- then children or immunosuppressed - haematogenous
- staph aureus
- haemophilus in children
Name the ligaments of the knee
- lateral collateral ligament
- medial collateral ligament
- ACL
- PCL
What kinds of fibres do the menisci have?
- longitudinal fibres
- radial fibres
Who usually gets meniscal tears?
- usually sporting injury in younger patients
- or getting up from squatting position in younger patients
- can get atraumatic spontaneous degenerate tears in older patients (middle aged onwards)
What percentage of ACL rupture have a meniscal tear?
50%
Describe the pain of meniscal tears
- pain and tenderness localised to the joint line
What is more common - medial meniscal tears or lateral meniscal tears?
- medial meniscal tears are approximately 9-10 times more common
Describe tests and investigations for meniscal tears
- +ve meniscal provocation tests (unreliable)
- investigate with MRI is suspected
Name the patterns of tear for meniscal tears
- longitudinal tear
- bucket handle tear
- radial tear
- parrot beak tear
Describe the healing potential for meniscal tears
- limited healing potential
- only peripheral 1/3 has blood supply
- radial tears wont heal
- pain from initial injury may settle
When would arthroscopic meniscal repair be considered for meniscal tears?
- acute traumatic peripheral meniscal tears in younger patients
When would arthroscopic meniscectomy be considered for meniscal tears?
- for irreparable tears with recurrent pain, effusion or mechanical symptoms (catching, clicking, locking) which fails to settle
Acute locked knee signifies displaced what?
Bucket handle meniscal tear
Describe bucket handle meniscal tears
- patient will have 15 degrees springy block to extension
- urgent surgery required to unlock knee
- may be repairable if picked up early
- if knee remains locked, may develop FFD
- if irreparable needs partial meniscectomy to unlock knee and prevent further damage
Describe degenerate meniscal tears
- common (20% over 50, many asymptomatic)
- meniscus weakens with age and can tear spontaneously
- probably represents 1st stage of OA
- pain from 2nd degree effects - bone marrow oedema, synovitis
- inflammation from initial onset may settle
- injection may help
- increasing evidence that arthroscopic meniscectomy ineffective - only for unstable tear with mechanical symptoms, not for pain only
The MCL resists what stress?
Valgus
The LCL resists what stress?
Varus
The ACL resists what stress?
- anterior subluxation of the tibia and internal rotation of the tibia in extension
The PCL resists what stress?
Posterior subluxation of the tibia ie anterior hyperextension of the knee
Describe grade 1 knee ligament injuries
- sprain
- tear some fibres but macroscopic
Describe grade 2 knee ligament injuries
- partial tear
- some fascicles disrupted
Describe grade 3 knee ligament injuries
- complete tear
MCL rupture may lead to what instability?
Valgus instability
ACL rupture may lead to what instability?
Rotatory instability
PCL rupture may lead to what instability?
Recurrent hyperextension or instability descending stairs
An MCL tear can tear which attachments?
- femoral attachment (most common)
- tibial attachment
- midsubstance
Describe MCL injury treatment
- MCL usually heals well even if complete tear
- brace, early motion, physio
- pain can take a few to several months to settle
- rarely requires surgery - reconstruction with tendon graft
What is the classic history of ACL rupture?
- usually sports injury - football, rugby, skiing
- classic history of ‘pop’ haemarthrosis and giving way on turning
Describe the treatment and outcomes for ACL rupture
- ACL injuries can stabilise with time and physio
- 1/3 compensate and are able to function
- 1/3 can avoid instability by avoiding certain activities
- 1/3 do not compensate have frequent instability or cant get back to high impact sport
Describe the role of surgery in ACL rupture
- rotatory instability not responding to physio
- protect meniscal repair
- professional athletes / very keen on high impact sport
- as part of multiligament reconstruction
- does not treat pain
- does not prevent arthritis
- risk vs benefit of surgery
- RCT - no difference in functional outcomes conservative vs reconstruction
Describe the outcomes of ACL reconstruction surgery
- 3/12 to 1 year rehab
- some neve get back to full sport
- 85-90% professional footballers RTP
- 45-50% amateurs RTP
- around 20% failure rate
- graft donor site morbidity
- stiffness
- infection 1%
- those that do return to sport may not get back to prior level and may only last a few years
- most have radiographic evidence of arthritis within 10 years
Describe LCL injury
- relatively uncommon
- varus and hyperextension
- LCL doesnt heal and can cause varus and rotatory instability
- high incidence common peroneal nerve palsy
- often occurs in combination with PCL or ACL injury
- complete rupture needs urgent repair if early (within 2-3 weeks)
- later > reconstruction (hamstring or other tendon)
Describe PCL rupture
- direct blow to anterior tibia, (dashboard / motorbike) or hyperextension injury
- popliteal knee pain and bruising
- isolated PCL rupture rare (usually with other injury)
- most isolated cases dont require reconstruction
- instability > recurrent hyperextension or feeling unstable when going down stairs
- if part of multi-ligament knee injury, usually need reconstruction
Describe knee dislocations
- serious high energy with high incidence complications
- popliteal artery injury (tear, intimal tear and thrombosis)
- nerve injury common peroneal nerve
- compartment syndrome
- emergency reduction, recheck neurovascular status
- any concerns with vascular status > vascular surgery review, may need revascularisation
- may need ex fix for temporary stabilisation
- multi-ligament reconstruction later
Describe patellar dislocation
- rapid turn or direct blow
- increased incidence in females, adolescents, ligamentous laxity, valgus knee, torsional abnormalities
- 10% > recurrent dislocation
- can cause chondral or osteochondral injury
- some may benefit from surgical stabilisation - MPFL reconstruction
The patella is always dislocated in which direction?
Laterally
Describe patellofemoral pain syndrome
- aka idiopathic adolescent anterior knee pain, chondromalacia patellae
- may be due to muscle imbalance (including gluteal weakness), tightness of lateral tissues, bony malalignment (valgus, internal rotation), flat feet
- some cases have obvious patellar maltracking
- physio for vast majority - many get better
- can do invasive bony surgery for the most severe cases but results are unpredictable
Describe extensor mechanism rupture
- fall onto flexed knee with quads contraction > rupture quads or patellar tendon
- previous tendonitis
- steroids
- chronic renal failure, ciprofloxacin
- unable to straight leg raise
- palpable gap
- US or MRI if in doubt
- require urgent surgical repair
Describe osteochondral injuries
- a highly controversial area
- should only be used for small localised areas of damage with persistent pain
- various surgical techniques, results unpredictable
- does not work for more general / widespread changes of OA or multiple defects
What is osteochondritis dissecans?
- an area of the surface of the knee loses its blood supply and cartilage +/- bone can fragment off
- most common in adolescence, some asymptomatic
- can heal or resolve spontaneously
- can cause pain, recurrent effusions, limping
Describe treatment in osteochondritis dissecans
- indications for surgery controversial
- if detaching on MRI can pin in place
- if detached can fix or remove
- may consider cartilage regeneration for persistent pain
- can only fix is the child is still growing, otherwise needs removed
Describe bone bruising / bone marrow oedema
- only appreciated after advent of MRI
- impaction of articular surface leads to microscopic fracture of trabecular bone with bleeding and inflammation
- a major source of pain after meniscal tear, ligament injury
- a major source of pain after meniscal tear, ligament injury
- will settle with time; typically 3 months but can take over a year
- no treatments known to speed its resolution
- hyaline cartilage may deteriorate over time > chondral defect
Describe loose bodies with knee soft tissue problems
- trauma, OCD and joint degeneration can cause a fragment of cartilage +/- bone to detach causing a loose body in the joint
- they can grow over time getting nutrition from synovial fluid and may cause painful locking or catching
- some can stick to synovium or fat pad > no longer ‘loose’
- they are commonly over-diagnosed with an opacification identified on xray
Describe the treatment of loose bodies
- arthroscopic removal can help troublesome symptoms
What is a fabella?
An accessory ossicle (usually) in the lateral head of gastrocnemius commonly misdiagnosed as a loose body
Describe bakers cyst and bursitis
- common swellings around the knee
- risk of wound problems and recurrence is removed > leave alone
Getting up from squatting, sudden sharp pain medial joint line, effusion, recurrent medial pain and catching +/- locking is the classic history for what?
Meniscal tears
Name the bone forming MSK tumours
- osteoma
- osteoid osteoma
- osteoblastoma
- osteosarcoma
Name the cartilage forming MSK tumours
- chondroma (enchondroma)
- osteochondroma
- chondrosarcoma
Name other MSK tumours (non bone forming and non cartilage forming)
- ewings sarcoma
- giant cell tumours
What is the commonest cancer affecting the bone?
Metastatic (secondary) bone cancer
What is the commonest primary cancer affecting the bones?
Multiple myeloma
What is the commonest primary bone tumour?
Osteosarcoma
Ewings sarcoma is characterised by what?
Loss of bone / lysis
Name the commonest cancers for secondary spread to bone
- breast
- lung
- thyroid
- kidney (renal)
- prostate
Bone tumours account for what percentage of childhood cancers?
10%
Name risk factors for primary bone cancer
- vast majority are idiopathic
- previous radiotherapy
- predisposing conditions; pagets, fibrous dysplasia, multiple endochondroma
- genetic; li fraumeni (p53) / familial retinoblastoma