R: Inflammatory Arthritis Flashcards
what are the 3 subtypes of inflammatory arthritis?
antibody associated, seronegative spondylopathies, crystal arthritis
what are antibody associated arthritides (ie. seropositive)
this means that rheumatoid factor is present inducing the body to undergo an autoimmune inflammatory process which produces antibodies
which disease falls under antibody associated spondyloarthropathy?
rheumatoid arthritis
what is RA?
autoimmune inflammatory symmetric poly-arthroplasty which also affects tendons
epi of RA?
W, 2nd-5th generation, 1% of population affected
aetiology of RA?
genetic, certain infections, trauma
antibody that is associated to RA?
anti-CCP
pathogenesis of RA?
mutations convert arginine AA to citrulline mimicking antigen > anti-CCP antibodies activated which causes inflammatory reaction
which type of hypersensitivity reaction is RA?
T3/T4
site of RA?
hands, wrists, feet, ankles, elbows, cervical spine
s/s of RA?
pain and stiffness >30mins in morning, swollen, reduced strength symmetrical
rheumatoid nodules are present in ___ RA and are due to intense inflammatory changes in ______ regions
chronic severe, extensor
T/F: DIPs are involved in RA
F: MCP, PIP, MTPs, not DIPs
which ix for RA?
bloods- inflammatory markers (CRP, ESR, plasma viscosity)
serology- anti-CCP, RF
imaging- x-ray, USS (synovitis)
what is the scoring systems for RA?
DAS28 score
mx for RA?
DMARDs= methotrexate, sulfasalazine, HCQ
analgesia
steroids
biologics= anti-TNFa, rituximab
complications of RA
systemic inflammation
extraarticular presentation- rheumatoid nodules, Caplan’s syndrome
Tendon Rupture
cervical spine instability
what are seronegative spondyloarthropathies?
inflammatory arthritides characterised by spine and peripheral joints involvement with HLA B27 association
what are the 4 types of seronegative arthritides?
ankylosing spondylitis, psoriatic arthritis, reactive arthritis, enteropathic arthritis
what is ankylosing spondylitis?
systemic inflammatory disorder that affects spine and scar-ilaic joints
epi of ankspon?
early adulthood-20-40, M
what is the common endpoint of ankspon?
fusion of vertebral joints
s/s of ankspon?
back pain, sacral inflammation, stiffness, pain in buttocks, ‘?’ spine
non-spinal: uveitis, costochondiritis, aortosis, amyloidosis
ix for ankspon?
bloods- CRP, ESR, HLAB27
exam- targus to wall, chest expansion
imaging: bamboo appearance (syndesmophwytes), erosion of scar-ilac joints
mx of ank spon?
NSAIDs, DMARDs, anti-TNFa
physio/ preventative exercises
early diagnosis key- may lead to muscle wasting and kyphosis
what is psoriatic arthritis?
inflammatory arthritis associated with psoriasis
what percentage of people with psoriasis will have psoriatic arthritis?
30%