Fibromyalgia, OA and Crystal Arthropathies Flashcards
F:M fibromyalgia
10:1
RF fibromyalgia
Life stress
Alcoholism
Injury
Low SE status
general Sx of fibromyalgia (5)
Multiple regional pain Fatigue Low affect/irritable Poor [ ] Non-restorative sleep
Variable locomotor Sx - fibromyalgia
Early morning stiffness
Subjective swelling - fingers
Numbness fingers
Diagnostic criteria fibromyalgia
= a diagnosis of exclusion
widespread pain >3m
Widespread pain index >7 + Sx severity scale
Pain elicited at 11+ def points/4-5 regions
Hyperalgesic withdrawl in all 3 quadrants
Ix fibromyalgia
Hx (rule out red flags + depression) FBC - anaemia/lupus ESR/CRP TFT - hypothyeoid Ca + ALK
Conservative mx fibromyalgia
Education
Lifestyle - incr activity level
Sleep hygiene
CBT/relaxation
medical Mx fibromyalgia
Amitriptyline
important DDx fibromyalgia
chronic fatigue syndrome
PS chronic fatigue syndrome
Persistent fatigue >6m Affecting physical + mental fct Present >50% time \+ 4 of: Myalgia Polyarthralgia Reduced memory Unrefreshing sleep Fatigue after exertion for 24hrs Persistent sore throat Tender LN
Which joints are commonly affected in OA
Hip
Knee
DIP / PIP
Thumb CMJ, MTPJ
Which joints are classically spared in OA?
MCP
PS OA
Progressive pain
Activity related
Stiffness, worst after rest, lasting 30 mins
Later features OA (4)
Mm wasting
Loss mobility
Deformity
Joint instability
O/E OA (LFM)
Look: bony swelling, mm wasting
Feel: Joint line tenderness, effusion, crepitus
Move: Decr ROM
RF OA (7)
Age FHx F Obesity Trauma Hypermobility Certain occupations
Protective factor OA
OP
2’ causes of OA (7)
Pre-existing joint damage - inflamm, septic, crystal, AVN, trauma Acromegaly Haemochromatosis Haemophilia Neuropathies
Hip OA - affects which gender more
Male
Is Hip OA typically unilateral or bilateral
Unilateral
ps hip OA
Painful
Decr internal/external rotation
+ve Trendelenburgs
RF knee OA (3)
Obesity
Trauma
Soft tissue injury
Is knee OA typically unilateral or bilateral
bilateral
O/E - knee OA
Effusion/crepitus
Decr ROM
Quad wasting
Hand findings OA
CMC + MCP joint
Bouchards (PIPs) and Heberden’s nodes (DIPs)
who tends to get nodal generalised OA
Menopausal F
People w/ autoimmune/familial link
Are DIP s or PIPs ore affected in nodal genrealised OA
DIPS
Sx early OA
asymptomatic
XR findings OA (7)
= LOSS Loss of joint space (non-uniform) Osteophytes subarticular sclerosis subchrondral cysts No soft tissue swelling Diffuse osteopenia NO erosions
Ix OA (5)
Bloods - CRP/ESR RF ANA XR - 2 views CT/MRI
Conservative Mx (4)
education
decr W
physio
Decr mechanical factors
1st line medical Mx OA
Paracetamol + TO NSAID
2nd line medical Mx OA
PO NSAID + TO capsaicin
Surgical Mx OA
Arthroplasty (total/1 compartment)
Young - arthroscopy + joint washout
Arthrodesis (ankle/spine/hand)
Absolute C/I joint replacement
UnTx joint sepsis
Relative C/I joint replacement (2)
Young
Co-morbidities
Complications joint replacement (8)
Leg length discrepancy Dislocation Infection DVT Periprosthetic # Persistent pain Polythene wear acetabular compartment NV injury
Which gender dominates gout cases
Males
What is gout due to an increased presence of?
Monosodium urate monohydrate
Where are the MSUM deposited in gout
Peripheral connective tissue in + around synovial joints
Which joint is most classically affected in gout
1st MTPJ
RF gout (5)
Age Male Menopausal status Metabolic status High protein diet/alcohol
secondary causes of gout
CKD Drugs HTN HyperPTH Hypothyroid Incr uric acid prod by metabolic/myeloproliferative conditions
If a patient has gout and is <25, what cause is most likely
Inherited enzyme disorder
PS acute urate gout
Acute, severe pain (worst ever)
Rapid onset
Extreme tenderness + marked swelling/erythema
Joint stiffness
When is the pain maximal in acute urate gout
2-6hrs
How long does it take for the acute urate gout attack to resolve?
5-14 days
Precipitants - acute urate gout attack (3)
Alcohol
Food
Dehydration
LT complications acute urate gout (3)
Renal glomerular disease
Tubular + interstitial disease
Urolithiasis
What is the main DDx for acute urate gout?
Septic arthrits
What do the large MSUM crystal deposits in chronic trophaceous gout form
Irregular firm nodes
= Tophi
Classical sites chronic trophaceous gout
Extensor surfaces fingers, hands, elbows, achilles
Ix gout (4)
Bloods - FBC, UEm Se uric acid
Aspiration of joint/arhtrocentesis –> MCS + polarised light microscopy
XR
ID cause - BP/Urine dip/BM/ESR
Appearance of gout underpolarised light micrscopy
Negative birefringent needle shaped
Mx - acute ep gout (4)
PO NSAID (naproxen/diclofenac)
PO colchicine if can’t have NSAID
Early joint asp + CCS
Early mobilisation + elevation
What is pseudogout
Ca pyrophosphate crystals deposited in hyaline/fibrocartilage of joints –> chondrocalcinosis
Causes pseudogout
Sporadic
Familial
Metabolic disease - hyperPTH, decr PO4, decr Mg, Wilsons
Which 3 joints is pseduogout most comon in
Knee
Wrist
Pelvis
Polarised light microscopy appearance - pseudogout
+ve biofringent + rhomboid shape
XR appearnce pseudogout
Chondrocalcinosis
If someone PS w/ pseudogout <55, what should you do
Screen for metabolic/familial predisposition
What is Calcific perarthritis
CaPO4/apatite deposition
If CaPO4 = deposited in periarticular tissue, what does it lead to
calcific tendonitis
If CaPO4 = deposited in the hyaline cartilage, what does it lead to
OA
If CaPO4 = deposited in SC tissue/mm, what does it lead to
OA