Inflammatory joint disorders Flashcards
word for single joint pain
monoarthralgia
word for mutliple joint pain
polyarthralgia
conditions associated with polyarthralgia
AUTOIMMUNE JOINT DISEASES
- RA
- C.T disorders
- Spondyloarthritis
conditions associated with monoarthralgia
- crystal arthropathy (gout,psudeogout)
- infection
- degenerative disorder (OA)
RA
- prevalence
- incidence
- gender
- peak onset
- 1% pop
- 12,000 new cases per year
- females (3:1)
- 20-50yrs
RA
- joints commonly affected
- clinical features
- MCP +PIP of wrist (+ knees + ankles + feet)
- symmetrical polyarthralgia + early morning stiffness
RA hands
- early stage
- intermediate stage
- late stage
- erythema + swelling + warmth + tender MCP
- swan neck deformity + boutinnere deformity
- rheumatoid nodules + ulnar deviation + sublax phalanges
RA knees
- valgus deformity
2. bakers cyst (calf muscles)
RA occular complications
RA affects mucous membranes not just synovium
- keratoconjuncttivitis sicca (no tears - dry eyes)
- scleritis
scleritis - intracoccular content herniates - SCLEROMALACIA PERFORANS
RA neuromuscular complications in hand
CARPAL TUNNEL SYNDROME
- median nerve entrapment
- test = phalen’s /tinel’s
- thenar eminence wastage
- numbness of thumb/1st 2 fingers
RA neuromusclar complication spinal cord
ATLANTO-AXIAL SUBLUXATION
- NECK PAIN = red flag
- exc movement between C1 + C2 -damages SC
- UMN signs in legs = babinksi,spasticity, hyperflexia
can lead to death
Reason for mortality in RA patients
IHD - reduces L.E 10years
Systemic complications in RA
- cardiac
- bone
- IHD, pericarditis, nodules
2. accelerated osteoporosis
Pathology RA
- hypertrophy of synovium - pannus - cartilage destruction + bone exposed
- infiltration of immune cells - mass pro-inflammatory cytokine release - cartilage + bone destruction
what rheumatoid factor (RF)
autoantibody to Fc portion of IgG
% RA patients with RF
70-80%
n.b - ppl with RF may not have RA also
why is anti CCP a better diagnostic test for RA than RF
- anti CCP gives less false positives than RF
- higher % have anti CCP - have RA
Radiological changes in RA
- 3 features
- % patients with changes after 1yr
- % patients with changes after 2yr
- bony erosions + soft tissue swelling + peri-articular osteoporosis
- 15-30%
- 90%
*x-rays - RA progression too far before diagnosis (+treatment)
what type of imaging can provide earlier diagnostic for RA
ULTRASOUND
- synovial thickening
- effusion
3 clinical features qualify RA diagnosis
- polyarthritis
- raised ESR/CRP (inflammatory markers)
- RF + anti-CCP
Currentr treatment for RA
COMBINATION THERAPY
- conventional DMARDs
- steroids (inflammation)
- analgesics
- adjucntive theraphy
Adjunctive therapy for RA
- use of statins
- use of bisphosphonates
- slow IHD
2. slow osteoporosis
Name 3 autoimmune connective tissue disorders
- systemic lupus erthyematous
- dermatomyositis
- scleroderma
SYSTEMIC LUPUS
- clinical features
- face
- systemic - antibody
- mortality
1.butterfly rash + alopecia + telangiectasia
renal failure + polyarthralgia + fatigue
2.antinuclear antibody
3.accelerated atherosclerosis