Brief Overview of the Spondyloarthropathies Stacy P. Ardoin, MD, MS Adult and Pediatric Rheumatology...
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Transcript of Brief Overview of the Spondyloarthropathies Stacy P. Ardoin, MD, MS Adult and Pediatric Rheumatology...
![Page 1: Brief Overview of the Spondyloarthropathies Stacy P. Ardoin, MD, MS Adult and Pediatric Rheumatology Wexner Medical Center at The Ohio State University.](https://reader035.fdocuments.us/reader035/viewer/2022062800/56649dff5503460f94ae82cc/html5/thumbnails/1.jpg)
Brief Overview of the Spondyloarthropathies
Stacy P. Ardoin, MD, MSAdult and Pediatric Rheumatology
Wexner Medical Center at The Ohio State University
and Nationwide Children’s Hospital
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Objectives
Identify the spondyloarthropathies (ankylosing spondylitis, reactive arthritis, psoriatic arthritis, enteropathic arthritis) and the clinical features they have in common.
Describe the relationship between the HLA-B27 antigen and the spondyloarthropathies.
Relate the general approach to treatment of the spondyloarthropathies
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Objectives
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Spondyloarthropathies
Family of chronic inflammatory diseases with common clinical features Ankylosing spondylitis (AS) Reactive arthritis Psoriatic arthritis Enteropathic arthritis Undifferentiated spondyloarthropathies
Common (1-2% population)
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Spectrum of Spondyloarthropathies
ankylosingspondylitis
psoriaticarthritis
enteropathicarthritis
reactive arthritis
undifferentiated spondyloarthritis
Common: overall prevalence 1-2% of adult population
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Common Clinical Features of Spondyloarthroapthies
Involvement of axial skeleton especially sacroiliac (SI joints)
Peripheral arthritis Lower limbs > upper limbs Often asymmetric, oligoarticular
Enthesitis Extra-articular features
Mucocutaneus Uveitis
Male predominance, familial clustering HLA-B27 association, absence of autoantibodies
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How is SpA different from RA?
SpA RA Male > Female Female > Male
Asymmetric oligoarthritis, dominant in lower extremities
Symmetric polyarthritis; dominant in upper extremities
Usually RF negative 80% RF positive
Cervical, lumbosacral spine involvement
Cervical spine involvement
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Inflammatory Back Pain
Insidious onset before age 45 yrs Persistence for at least 3 months Accentuation of back pain in
morning after waking or after prolonged rest
Back pain improves with exercise
Calin & Fries. NEJM 1975; 293: 835
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SpondyloarthropathiesSpondyloarthropathies
InflammatoryPeripheral
Arthritis
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Enthesitis
Definition: inflammation of tendon, ligament, joint capsule at site of attachment to bone
Clinical manifestations Tendonitis Fasciitis Dactylitis Spondylitis
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Dactylitis
Also seen in sarcoidosis, sickle cell anemia
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Spondyloarthropathies
Symptomatic anterior uveitis Likelihood of Iritis
Disease Percent•AS 20-30•Reiter’s 12-37•PsA w/ spondylitis 7-16•IBD 2-9•Undiff SA ND
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Spondyloarthropathies
Urethritis or Cervicitis
Acute urethritis or cervicitis due to Chlamydia or Gonorrhea can trigger reactive arthritis.
In addition, some SpA patients may have noninfections circinate balanitis.
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Schober Test
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Ankylosing spondylitis (AS)
Epidemiology Males affected more than females Peak age at diagnosis: 20 and 40 years Affects up to 1% of adult population
Juvenile AS Onset at age < 16 years
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AS: Clinical Diagnosis
Must have inflammatory arthritis of axial skeleton Most common symptom: Inflammatory low back
or buttock pain Can have peripheral arthritis, usually oligoarticular, and
enthesitis Extra-articular symptoms:
Acute, symptomatic iritis Ulcerations of gastrointestinal tract Rare: interstitial lung disease, aortic valve
insufficiency.
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Little et al. Am J Med 1976; 60: 278-285.
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Psoriatic Arthritis (PsA)
Epidemiology Affects males and females equally Peak age at diagnosis: 20 and 40 years Prevalence: 1-2 per 1000 adults Incidence: 6 per 100,000 adults/year
Juvenile PsA Onset at age < 16 years Considered a juvenile idopathic arthritis
subtype.
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PsA: Clinical Diagnosis
Psoriasis Classic skin lesions Nail lesions (pits, onycholysis) Arthritis occurs before skin lesions in about 15% of
patientsInflammatory arthritis
Axial Peripheral - usually oligoarticular, can be polyarticular.
Often involves DIP joints unlike RA.EnthesitisExtra-articular: symptomatic uveitis
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Psoriatic Arthritis
In this image, note the nail findings and swelling of DIP joints in a patient with PsA.
This image shows extensive and destructive joint involvement of finger joints in a patient with PsA.
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Skin and Nail Changes in PsA
Classic silvery plaques over elbows and in umbilicus.
Nail pitting in PsA
Nail thickening, discoloration, onycholysis. This patient also has psoriatic plaques on hands and obvious DIP swelling.
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Enteropathic Arthritis
Complication of inflammatory bowel disease (IBD) Arthritis can parallel IBD disease activity Arthritis can be axial, peripheral
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Signs of Enteropathic Arthritis due to IBD
Pyoderma gangrenosum
Oral ulcers Erythema nodosum
Symptomatic uveitis
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Reactive Arthritis
Definition – Aseptic peripheral arthritis occurring within one month of infection Infections: GI, urethral, cervical (other)
Extra-articular manifestations common Can be self limited or chronic
HLA-B27+ increases risk of chronicity
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Reactive Arthritis
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Radiographic Findings in the Spondyloarthropathies
Sacroiliitis: Can be unilateral or bilateral. See widening and irregularity of joint space, sclerosis, erosions.
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Lumbar spine: bridging syndesmophytes, “bamboo spine”.New bone forms along the interosseous ligaments.
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Enthesitis
Erosion
New bone
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HLA-B27 and the Spondyloarthropathies
ConditionPercent of people with the
condition who are HLA-B27 positive
Ankylosing SpondylitisCaucasians: 90-95%African-Americans:50%
Reactive Arthritis 60-80%
Enteropathic Arthritis 60%
Psoriatic Arthritis 60%
Undifferentiated Spondyloarthropathy
20-25%
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HLA-B27 in Different Populations
Population Prevalence
Haida Indians 50%
Eskimos 20%
Norwegians 16%
US Caucasians 8%
African-Americans 2%
Japanese <1%
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HLA-B27: Is it important?
HLA-B27 not sufficient to cause disease but appears to increase risk
HLA-B27antigen may impact the way the immune system reacts to bacteria, especially in the gut.
Overzealous reactions to bacteria may trigger systemic inflammation.
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Treatment Approach to Spondyloarthropathies
NSAID
sulfasalazine, methotrexate
(often ineffective for axial disease)
intraarticularsteroids
PT, OT
topical steroids
Anti-TNF agentsAnti-TNF agents are usually the most effective therapy for
moderate to severe spondyloarthropathies.
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Case 1
History: A 42 yr old man develops swelling, morning stiffness in his left ankle and low back stiffness for 1 hour every morning. He also has pain in heels and bottoms of feet. This has been going on for about 3 weeks. Seven weeks ago he had urethral discharge and pain on urination. This improved without treatment but persists.
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Case 1 - continued
Other past medical history: None
Other symptoms: No fevers, weight loss. No nasal or oral ulcers. No rash. No GI symptoms. Dysuria improved.
Family history: He has an uncle with chronic back pain, worst in mornings.
Social history: He is a married accountant who’s had 3 sexual partners in the past year.
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Case 1 - continued
Physical Exam:He has no fever and does not appear acutely ill.
His exam is normal except for the following findings:
Genitourinary exam: erythema at urethra, no discharge
Musculoskeletal exam – effusion of his left ankle, reduced range of motion of lumbar spine with tenderness over sacroiliac joints on palpation, tender and swollen Achilles tendons.
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Case 1 - Labs
Complete blood count, liver and kidney tests are normal.
Marks of inflammation (sedimentation rate, c-reactive protein) are elevated
Arthrocentesis of left ankle is performed: Synovial fluid – WBC 24,000, culture and gram stain are
negative, no crystals.
Urethral swab studies show that he has Chlamydia
HLA-B27 positive
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Case 1 - Management
He and partners are treated with antibiotics for Chlamydia urethritis. He is treated with a non-steroidal anti-inflammatory drug (NSAID) for 4 weeks and the arthritis and enthesitis resolve.
The fact that he is HLA-B27 positive increases the risk that his symptoms may recur and may become chronic with or without an infection.
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Case 2
History: 20 yr old man presents with incapacitating lower back pain and stiffness. These symptoms have been present and worsening for 6 months. He’s had no injury to his back. None of his other joints are bothering him. He denies other symptoms.
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Case 2 - continued
Other medical history: None
Review of systems: He specifically denies fevers, rash, eye pain or redness, oral ulcers, abdominal pain, diarrhea, dysuria, urethral discharge.
Family history: His brother has Crohn’s disease.
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Case 2 - continued
Physical Exam:
He appears uncomfortable.
His exam is normal except for: Tenderness at both sacroiliac joints on
palpation, decreased lumbar spine range of motion (reduced Schober’s test).
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Case 2 - Labs
Blood count, liver and kidney tests are normal.
Markers of inflammation (sedimentation rate and c-reactive protein) are elevated
HLA-B27 positive
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Case 2 – x-rays
He has sacroiliitis of bilateral SI joints
X-ray shows subchondral sclerosis and irregularities of the joint surface,
including erosions in the iliac side of the sacroiliac joints.
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Case 2 – Management
He is started on a non-steroidal anti-inflammatory drug but this fails to control his symptoms adequately.
Because he has axial disease which usually does not respond well to methotrexate or sulfasalazine, he is started on etanercept, an anti-TNF drug with marked improvement in symptoms.
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Thanks!