2: Inflammatory Spondyloarthropathies Flashcards
What is an inflammatory spondyloarthropathy
chronic inflammatory arthritis disease that often affects joints and enthesis (where tendons + ligaments attach tot bone).
Name 4 inflammatory spondyloarthropathies
- Ankylosing spondylitis
- Enteropathic arthritis
- Reactive arthritis
- Psoriatic arthritis
what are 4 over-arching features of inflammatory spondyloarthopathies
- Affect 20-40y
- More common in males
- Genetic association HLAB27
- often unilateral
What a mnemonic to remember conditions associated with HLAB27
A PAIR
What conditions are typically associated with HLAB27
Acute anterior uveitis Psoriatic arthritis Ankylosing spondylitis Inflammatory bowel disease Reactive arthritis
What is ankylosing spondylitis
Chronic inflammatory disease of the axial skeleton that leads to partial or complete fusion of the spine
In which gender is ankylosing spondylitis more common
Male
What age does ankylosing spondylitis most commonly onset
20-30
What do 95% of individuals with ankylosing spondylitis have
HLAB27
Explain how ankylosing spondylitis may present
- Gradual onset back and spine pain
- Morning stiffness that improves with activity
- Night pain
- Tenderness over SI joints
How can the extra-articular manifestations of ankylosing spondylitis be remembered
A’s
What are the 8 extra-articular manifestations of ankylosing spondylitis
Anterior uveitis Apical fibrosis Aortic regurgitation AV node block Achille's tendonitis Amyloidosis Peripheral Arthritis And cauda equina
How else may AS present
Malaise
Fever
Fatigue
Chronic IBD
What is the most common extra-articular manifestation of AS
Anterior uveitis (25%)
What are the signs of ankylosing spondylitis
- Tenderness over SI joint
- Limited spinal flexion (+ve schober’s test)
- Reduced chest expansion
- Dactylitis
What 3 signs may be positive in AS
- Mennell
- FABER
- Schober
What is mennell sign
Pain on palpation over SI joint
What is FABER test
Pain on abduction, flexion and external rotation
What is schober’s test
Increase in less than 5cm on spinal flexion
What 4 investigations are used for ankylosing spondylitis
- Clinical
- CRP, ESR
- X-ray
- MRI
What is the criteria for referral the a rheumatologist for spondyloarthritis assessment
If an individual is under age 45, has had back pain for 3m and has 4 or more the the following criteria
- Lower back pain before age 35
- Symptoms that wake them up during second 1/2 of the night
- Buttock pain
- Improvement when walking
- Improve in 48h of NSAIDs
- Spondyloarthrosis in first-degree relative
- Current/previous arthritis
- Current/previous enthuses
- Current/past psoriasis
If an individual is positive on the clinical screen what should be done
HLAB27
If an individual is positive on HLA B27 what should be done
Refer to rheumatologist of spondylarthopathy screen
If ankylosing spondylitis is suspected but they do not meet the clinical criteria, what should be done
Advise individual to return if they develop new symptoms
What may the rheumatologist do
X-Ray
CRP, ESR
How will CRP/ESR present in ankylosing spondylitis
May be raised. But if not, ankylosing spondylitis should not be excluded
Is an x-ray required for the diagnosis of AS
No
What is an x-ray in AS useful for
Assess severity
What may be seen on x-ray in AS
- Sacroillitis
- Sclerosis
- Partial/totoal fusion
- Loss of lordosis
- Sclerosis of vertebral ligaments
- Syndesmophytes
What is a late stage of ankylosing spondylitis
syndesmophytes resulting in a bamboo spine
What is the best method for early detection of ankylosing spondylitis
MRI
When is MRI performed
If suspicion of sacroillitis but cannot be seen on x-ray
What is first-line management for ankylosing spondylitis
Exercise and stretching therapy
What is second line management for ankylosing spondylitis
Oral analgesia (NSAIDs, or paracetamol)
What is 3rd line management for ankylosing spondylitis
anti-TNFa
Name 3 anti-TNFa inhibitors
- Entarnercept
- Adalimumab
- Infliximab
Who is infliximab, etarnercept and adalimumab reserved for
Those with high disease activity despite conventional treatment
When may sulfasalazine be given in ankylosing spondylitis
If peripheral joint involvement
If suspect an individual has anterior uveitis what should be done
Same day referral to opthalmology
What are 4 complications of ankylosing spondylitis
- Increase risk stroke
- Increase risk CVD
- Reduced spinal mobility
- Reduced chest expansion causing respiratory difficulties
- Increased risk of osteoporotic fractures
What is reiter’s syndrome also referred to as
Reactive arthritis
What is reactive arthritis
Arthritis that occurs following UTI, STI or gastroenteritis
What classification of arthritis is reactive arthritis and why
Spondyloarthopathy due to its association with HLA B27
What demographic is typically affected by reactive arthritis
Young Males
What are the two causes of reactive arthritis
Post-urethritis
Post-dysentry
What bacteria causes reiter’s syndrome post-urethritis
Chlamydia
What 4 organisms cause reactive arthritis following gastroenteritis
- Salmonella
- Yersinia
- Shigella
- Campylobacter
What are two risk factors for reactive arthritis
- HIV
- HLAB27
What is the typical latency period for reactive arthritis
2-4W
What is the triad seen in Reiter’s syndrome
Urethritis
Conjunctivits
Arthritis
(Can’t see, pee or climb a tree)
What proportion of patients have the triad associated with Reiter’s syndrome
1/3
How does arthritis in reactive arthritis present
- acute onset asymmetrical polyarthritis
- predominantly affects lower extremities
- sacroillitis
- dactylitis
How does reactive arthritis present if associated with gonococcal infection
migratory character
What are possible other features of reactive arthritis
- Oral ulcers
- Balantitis circinate = ring shaped lesions on the penis
- Keratoderma blenorrhagia = hyperkeritinsation of palms and soles
How is reactive arthritis often diagnosed
Clinically
What investigations could be ordered for reactive arthritis
- ESR, CRP
- HLAB27
What is used to manage reactive arthritis
NSAIDs
Antibiotics
What is typical prognosis of reactive arthritis
6m
What percentage of reactive arthritis may become chronic
20-30%
What are two complications of reactive arthritis
Aortic insufficiency
Arrythmias