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
tx of AS
morning exercise NOT REST
NSAIDS - symptom relief (+PPI)
TNF - alpha inhib = ADALIMUMAB or ETANERCEPT (stops sydesmophytes forming)
NOT BIOLOGICS (RA)
what is psoriatic arthritis
a type of seronegative spondyloarthritis
less severe than RA
Presentation of psoriatic arthritis
symmetrical polyarthropathy DIPJ only synovitis joint pain and stiffness Dactylitis PSORIASIS (scalp tender) 80% of the time has finger nail changes (brittle, leukonychia, pitting, onycholysis) arthritis mutiloans - telescopic fingers
what is arthritis mutilans
periasrticular osteolysis and bone shortening (telescopic fingers)
=psoriatic arthritis
nail changes in psoriatic arthritis
onycholysis - comes away from nail bed
leukonychia
pitting
brittle
epidem of psoriatic arthritis
10-40% of people w psoriasis (can present prior to skin changes)
HLA-B27 pos (60%)
fam Hx
Dx of psoriatic arthritis
bloods - high ESR, anaemic, RhF negative (vs RA)
xray - pencil in cup erosive changes DIPJ
synovial fluid aspirate
Mx of psoriatic arthritis
NSAIDS and analgesia
DMARDS or infliximab (TNF inhib) if more severe
intraarticular corticosteroid injections FOR FLARE UPS
what is Reactive arthritis
sterile inflam of synovial membrane tendons n fascia triggered by infection at a distant site (GI or GU)
typically 4 weeks later
causes of reactive arthritis
triggered by infection at distant site
GU - chlamydia
dysentery- salmonella, shigella, e.coli
presentation of reactive arthritis
cant see cant wee cant climb a tree
REITERS syndrome = conjuctavitis, urethritis, arthritis
cnat see - acute anterior uveitis
cant wee- circinate balanitis
climb a tree - enthesitis, pain and joint swelling
others = dactylitis, cervititis, keratoderma blennorrhagica (red painless raised plaques on hands n feet), nail dystrophy
dx of reactive arthritis
cultures - stool, GU Bloods - high ESR/CRP joint aspirate - not sterile = septic arthritis X-ray - enthesitis STI screen (RF and ANA neg)
Mx of reactive arthritis
spnt joints
NSAID
intraartic steroid injections
DMARDs - sulfasalazine (6M+) -(in RA, IBD also)