Spondlyoarthropie Flashcards
what are seronegative spondyloarthropathies
a group of overlapping conditions with certain clinical features- axial inflam - spine iliac joints hla b27 assos asymmetrical peripheral arthritis RF absense (SERO NEG) SPINE ACHE
overall features of spondyloarthropathies
SPINE ACHE Sausage digits (dactylitis) Psoriasis Inflam back pain NSAID - good response Enthesitis
Arthritis (asym)
Crohns/colitis/increase CRP
HLA-B27
Eye - uveitis
which gene assos w spodyloarthropathies
HLA-b27
what is ankylosing spondylitis
chronic inflammatory disorder of spine and sacroiliac joints
V strong assos w HLA-B27
epidemiology of ankylosing spondylosis
1% prevalence affects men more average onset is <30 YO often presents early teens to twenties YOUNG MALES
Clinical features of Ankylosing spondylosis
gradual onset of lower back pain worse at night stiff in morning relieved by exercise pain radiating from sacroiliac joint to buttocks and hips chronic back pain acute anterior uveitis achileles tendonitis (enthesitis) reduced lubar range of movement
diagnostic criteria for ankylosing spondylosis
chronic back pain, under 50 YO. has 3 of the following: morning stiffness worst at night- wakes them up alternating buttocks pain back pain improves with exercise
what is the name of the connective tissue between tendon or ligament and bone
enthesis
symptoms of ankylosing spondylosis
inflammatory back pain
enthesitis
Dyspnoea, due to costochondritis
complications of AS
Kyphosis osetoporosis chostochondritis enthesis uvetits bamboo spine
Investigation of AS
Bloods - increased ESR
HLA-b27 positive
MRI - erosion and narrowing = early
fusion = late
Xray- sclerotic erosions on sacroiliac joints,
enthesitis = blurring of upper/lower vertibral rims
syndesmophytes = boney spurs
bamboo spine - bony ankylosis and fusion
dagger sign - ossification of spinal ligaments = single radiodense line
what is bamboo spine
endstage of ankylosing spondylitis
fusion of vertibral bodies
stages of ankylosing spondylitis
enthesitis (lymphocyte and plasma infiltratino w local bone erosions at attachments of intervertebral and other ligaments)
SYNDESMOPHYTE - heals n new bone forms =bony outgrowths/spurs
sclerosis of underlying bone prevents flexion and rotation - BAMBOO SPINE
what are syndesmophytes
bony spurs
tx of AS why early?
early to prevent irreversible syndesmophyte formation and progressive calcifcation