Ortho/ Rheumatology Flashcards
What is osteoarthritis and who might it affect?
- = Degenerative joint disorder in which there is progressive loss of hyaline cartilage and bone remodelling.
- Typically affects people >50y. “Wear and tear”
- Risk factors: Age, obesity, previous injury, joint abnormality, haemachromatosis.
Presentation of osteoarthritis
- Pattern= asymmetrical. Large weight bearing joints.
- Hand signs:
- Deformity
- Periarticular tenderness
- Muscle wasting/ weakness
- Heberden’s and Bouchard’s nodes.
- Joint instability.
- Fixed flexion deformity.
- Thumb squaring.
- Bony osteophytes. No oedema, erythema or synovitis.
- Limited to joint involvement.
Ix of Osteoarthritis
- Bedside- SHx and ADLs
- Bloods- no change.
- Imaging- x-ray:
- Loss of joint space
- Osteophytes
- Subchondral cysts
- Subchondral sclerosis
- Special - ?joint aspirate –> WCC <2000
Tx of osteoarthritis
- Conservative- physio, OT, hydrotherapy, walking aids, home modification, weight loss, hot and cold packs
- Med- analgesia (paracetamol, NSAIDs, tramadol). Joint injections- local anaesthetic, steroids, synthetic synovial fluid.
- Surg- arthroscopic arthroplasy or washout. Osteotomy.
What is Rheumatoid Arthritis? Who might present with it?
- = Chronic systemic inflammatory disease. Characterised by symmetrical deforming peripheral polyarthritis. Inflamed synovial membranes.
- Associations:
- AI disease - female, post-partum, genetics, smoking. Eg thyroid, DM.
- Female : Male 3:1
- Any age
- Genetics- Rh Factor, HLA-DR4
Presentation of RA
- Symmetrical
- Small joints - MCP, MTP, DIP sparing
- Limited movement due to pain and stiffness (>1h morning). Stiffness improves with exercise.
- Boggy swelling. Red + hot.
- Joint signs:
- Deformity + ulnar deviation
- Warm and tender joints
- Muscle weakness
- Synovitis/ effusion
- Swan neck / Boutonierre deformity
- Z deformity
- Subluxation
- RA nodules - Firm. Elbows, hands, feet, lungs
- MULTISYSTEMIC!
Extra-articular features of RA
- Lungs- interstitial lung disease, pulmonary fibrosis, pleurisy, fibrosing alveolitis, nodules (Caplan syndrome = RA + pneumoconiosis esp coal miner)
- Skin - nodules. Firm, non-tender.
- Neuro - Cervical myelopathy, carpal tunnel
- Eyes - Sjogren’s, uveitis, iritis, scleritis
- CVS - vasculitis, pericarditis, Reynaud’s
- Weight loss (inflammation)
Ix of RA
- Bloods:
- FBC- normocytic, normochromic anaemia
- Rh factor +ve in 70%
- Imflammation- raised CRP, ESR, platelets
- Anti-CCP
- ANA
- Imaging:
- X-ray: loss of jointn space, erosions, soft tissue swelling, osteopoenia.
- ?USS
- ?MRI
- Special- joint aspirate WCC >2000
Diagnosis of RA
- 4/7 of:
- Morning stiffness >1h for 6 weeks
- Arthritis in >3 joints
- Arthritis of hand joints
- Symmetrical
- Rheumatoid nodules
- +ve Rh factor
- Radiographic changes
Tx of RA
- Conservative- Physio, OT, reg exercise, education, safety netting.
- Med:
- Analgesia- paracetamol, NSAIDs (+PPI), opiates
- Steroids - IM, PO, intra-articular. For exacerbations.
- Manage CVS risk
- ?Bisphosphonates to prevent osteoporosis
- DMARDs = 1st line
- Biologics if 2 DMARDs failed
Examples of DMARDs and SE
- All can cause myelosuppression –> pancytopoenia
- Methotrexate - SE: low folate, teratogenic, hepatotoxic, pulm oedema. Reg bloods.
- Hydroxychloraquin - SE: retinopathy, seizures. Safer in preg.
- Sulfasalazine - ABx + aspirin. SE: hepatotoxic, SJS, orange urine, low sperm count
What are biologics? Examples + SEs
- = Monoclonal Abs used in refractory RA.
- NB to screen for a Tx TB 1st
- Anti-TNFalpha: Infliximab, adalimubab. SE: infection, AI disease, cancer.
- Anti-CD20: rituximab.
What screening tool is used to monitoro RA?
- DAS28: Disease Activity Score
- Tender joints (28)
- Swollen joints (28)
- ERP/ CRP
- Patient’s VAS score (Patient’s global assessment of their health)
- –> guides management. >5.1= active disease
Psoriatic Arthirits - patterns of joint involvement
- Asymmetrical oligoarthritis (60%)
- Distal arthritis of DIPs
- Symmetrical polyarthritis (inc. DIPs)
- Arthritis mutilans
- Psoriatic spondylitis
Presentation, Ix and Tx of psoriatic arthritis
- Asymmetrical arthritis including DIPs
- Extra-articular:
- Nail changes
- Synovitis –> dactylitis
- Plaques
- Achilles tendonitis, plantar fasciitis
- Ix- X-ray= ‘pencil in cup’ and ‘plantar spur’
- Tx:
- NSAIDs
- DMARDs
- Biologics
What is enteropathic arthritis? Presentation, Tx
- = Chronic inflammatory arthritis in those with IBD (1/5)
- Presentation:
- Arthritis- asymmetrical, commonly peripheral limbs (esp legs). May have sacroilitis.
- Abdo pain
- Change in bowel habit
- Tx: Tx the IBD!
- Self-limiting 6w
- Acute- NSAIDs, intra-articular joint injections
Reactive arthritis - presentation, Ix, Tx
- = Sterile arthritis 1-4w after urethritis (chlamydia) or dysentry (campylobacter, salmonella, shigella)
- Reiter= can’t see, can’t pee, can’t climb tree
- Presentation:
- Asymmetrical lower limb oligoarthritis esp knee
- Eyes- iritis, conjunctivitis
- Keratoderma blenorrhagia (plaques on soles and palms)
- Circinate balanitis (painless penile ulceration)
- Ix- stool sample, swabs/ urine. bloods (raised CRP/ESR), x-ray
- Tx- splint, NSAIDs, local analgesia. DMARDS if >6w.
Septic arthritis - RF, organism, presentation, DDx
- Source= local or haematogenous.
- Organism- Staph. A, gonococcus, streps
- RF: Overlying infection, prosthesis, age, immunosuppression
- Presentation:
- V. quick onset
- Triad: Fever, pain, reduced ROM
- Hip + knee = most common. Knee > hip > ankle
- Severe pain, swelling, redness, heat
- Systemically unwell
- DDx - gout, reactive arthritis
Ix, Tx and complications of septic arthritis
- Ix:
- Bloods- cultures, FBC, ESR, CRP (raised)
- X-ray
- Joint aspiration - ++WCC
- Tx:
- Cons- splint, rest. Physio once resolved. Mobilise to avoid deformity
- Med- IV ABx- fluclox/ clindamycin
- Surg- washout, arthroscopic drainage
What is Gout? + RF/ causes
- = Monoarthropathy (or polyarthropathy) due to accumulation of monosodium urate crystals in and around joint –> erosive arthritis.
- RF:
- Dietary purines (red meat), ++ alcohol
- FHx
- Male
- Renal failure/ dehydration
- DM
- Obesity
- Psoriasis
- Haemolysis
- Preciptants- surgery, infection, fasting, diuretics
Presentation of Gout
- Usually monoarthropathy with severe joing inflammation (red, hot, swollen)
- Site- 60% MTP. Also ankle, foot, hand, wrist, elbow, knee
- Tophi - urate deposits
- Renal disease- stones, interstitial nephritis
- Associations to check for- IHD, HTN, metabolic syndrome
Ix of Gout
- Bloods- serum urate
- X-ray- early= soft tissue swelling. late= loss of joint space, punched out periarticular
- Synovial fluid LM- -vely birefringent needle shaped crystals
Gout Tx
- Acute- NSAIDs + colchicine. (Steroids if renal impairment), rest.
- Prevention:
- Cons- lose weight, no alcohol
- Med- allopurinol if recurrent attacks, tophi or renal stones. Sx free 4w.
What is pseudogout? Presentation, Ix and Tx
- = Calcium pyrophosphate deposition
- Presentation- usually spont. Acute monoarthropathy, typically in elderly
- Ix= synovial fluid LM. +ve birefringent rhomboid crystals
- Tx= cool packs, rest, NSAIDs +/- colchicine
What is ankylosing spondylitis and who is likely to get it?
- Chronic disease of unknown aetiology characterised by stiffening and inflammation of the spine and sacroiliac joints.
- Epidemiology:
- M:F 6:1
- Men present earlier (teens-20s)
- 90% HLA B27 positive
Conditions associated with HLA B27
PAIR
- Psoriasis
- Ankylosing spondylitis
- IBD
- Reactive arthritis
Presentation of Ankylosing Spondylitis
- Gradual onset
- Lower back pain. Worse at night, relieved by exercise. Can radiated into buttocks.
- Spinal stiffness + progressive loss of movement
- ? mark posture/ bamboo back
- Eyes- acute ititis/ uveitis
- Osteoporosis
- Costochondritis
- Apical pulmonary fibrosis + reduced thoracic expansion
- Aortic valve incompetence
Ix and Tx of Ankylosing Spondylitis
- Dx= clinical with Schrober’s test and occipital wall distance.
- Bloods- CRP, ESR, HLA
- Imaging- X-ray signs are late:
- Sacroilitis (blurring and narrowing)
- Squaring of vertebra
- Bamboo spine- calcification of ligaments
- Tx:
- Cons- EXERCISE, physio
- Med- NSAIDs, local steroid injections, bisphosphonates, anti-TNFalpha if severe
- Surg- hip replacement
What is osteoporosis and it’s RF?
- = reduction in bone mass –> fragility fractures
- RF= SHATTERED + female, age
- Steroids
- Hyperthyroid/hyperparathyroid
- Alcohol/ tobacco
- Thin (BMI <22)
- Testosterone
- Early menopause
- Renal/liver disease
- Erosive/ inflammatory joint disease
- Diet- malabsorption, low calcium
Presentation and Ix of osteoporosis
- Presentation- usually ASx. Present with fragility fracture - NOF, vertebral crush fracture, distal radius
- Ix:
- qFracture score - 30-99y
- FRAX score (40-90y)= 10y risk of fragility fracture. ?Education + repeat 2-3y. ?BMD scan? Risk >20% –> treat!
- Bloods- FBC, ESR/CRP, U+Es, calcium testosterone, immunoglobulins, albumin, Mg, phosphate, ALP. (Bone profile, rule out DDx)
- Imaging- X-ray fracture, DEXA scan
What bloods are in a bone profile?
- Calcium
- Albumin
- Phosphate
- Magnesium
- ALP
Indications and meaning of DEXA scan results
- Indications- Low impact fracture, women >65y with 2 or more RF, long term steroids, PTH disorder, myeloma, HIV, early menopause
- T score= no. SD away from youthful average.
- Z score= age matched
- Results:
- -1 - +1= Normal
- -1 - -2.5= Osteopoenia
- <-2.5= Ostoporosis
Tx of osteoporosis
- Cons- quit smoking and alcohol, weight bearing, calcium/ vit D in diet, falls prevention.
- Med:
- Bisphosphonates= 1st line. Eg alendronic acid. (Take with ++ water, sitting up). SE: GO, oesophageal erosis, MSK pain, osteonecrosis of jaw
- Strontium ranelate
- Calcium + vit D supplement
- Calcitonin
- HRT
- Surg- fix fracture
What is osteomalacia and how might it present?
- = Loss of bone mineral content. Uncalcified osteoid/ cartilage. Normal bone mass, lower quality.
- Presentation:
- Children= Rickets. Knock-kneed/ bow-legged, bone pain, craniotabes, growth retardation, Harrison’s sulcus, rachitic rosary
- Adults= Osteomalacia. Bone pain, fractures, proximal myopathy (low phosphate)
Causes of osteomalacia
- Vit D deficiency
- Liver/ renal failure (Vit D hyroxylation)
- Inherited Vit D resistance
- AEDs
- Malignancy- hypophosphataemia
Ix and Tx of osteomalacia
- Ix:
- Bloods - low calcium, PO4, vit D. High ALP, PTH
- X-ray- loss of cortical bone. Cupped mataphyses in rikets. Looser’s zones (pseudofractures)
- Tx:
- Cons- dietary Calcium D3
- Med- Vitamin D replacement. Monitor Calcium
What is fibromyalgia + its RF
- = chronic disease with widespread MSK of medically unexplained cause
- RF:
- Female (x10)
- Middle aged
- Depression/ anxiety/ stress
- Marital probs
- Low income/ work satisfaction
- Associations: Chronic fatigue, IBS, chronic headache
Presentation and Tx of fibromyalgia
- Presentation:
- Chronic widespread MSK pain
- Mornign stiffness
- Fatigue
- Low mood
- Sleep disturbance
- Poor concentration
- Tx:
- Cons- education, CBT, graded exercise prog
- Med- amitryptiline, pregabalin, venlafaxine
What is Sjogren’s syndrome and what is it associated with?
- = Keratoconjunctivitis sicca
- Classification:
- Primary. F:M 9:1. 4th-5th decade
- Secondary: RA< SLE, systemic sclerosis
- Associations:
- AI- thyroid, AIH, PBC
- MALT lymphoma
Presentation of Sjogren’s syndrome
- Xerostomia (dry mouth)
- Dry eyes
- Bilat. parotid swelling
- Vaginal dryness and dyspareunia
- Systemic- polyarthritis, Raynaud’s, pulm. fibrosis, vasculitis, myositis
Ix and Tx of Sjogren’s syndrome
- Ix:
- Bedside- schirmer test
- Bloods- ANA Ro + La, Rh factor, hypergammaglobulinaemia
- Special- Parotid biopsy
- Tx:
- Cons- artificial tears, saliva replacement
- Med- NSAIDs/ hydroxychloraquin for arthralgia. Severe- immunosuppression
What is Raynaud’s phenomenon and how is it classified?
- = Peripheral digital ischaemia precipiated by cold/ emotion.
- Classification:
- Primary- Idiopathic Raynaud’s disease
- Secondary- Systemic sclerosis, SLE, RA, Sjogren’s, thrombocytosis, beta blockers
Presentation and Tx of Raynaud’s
- Presentation:
- Digital pain + triphasic colour change: white –> blue –> crimson
- Digital ulceration + gangrene
- Tx:
- Cons- wear gloves
- Med- ACEi, CCB eg nifedipine, IV prostacyclin.
Bone mets- common primaries + presentation + Ix + Tx
- Primaries: Breast, lung, prostate, thryroid
- Presentation:
- Bone pain
- Pathological fracture
- Hypercalcaemia
- SC compression
- Ix- urinalysis, bone profile (high calcium, alk phos and phosphate), x-ray, bone scan, CT, MRI, PET
- Tx- Physio, OT, hormone therapy, chemo/ radio, bisphosphonates, surgery