Ch 3 - Rheumatology: Spondyloarthropathies Flashcards
What are types of Juvenile spondyloarthropathies?
- Juvenile AS
- Reiter’s syndrome
- Psoriatic arthritis
- Arthritis of Inflammatory bowel disease/Enteropathic arthropathy
How do seronegative enthesopathy and athropathy (SEA syndrome) present?
– RF (−)
– ANA (−)
– Enthesitis/arthritis/ arthralgia
– May have uveitis (painful and acute)
How does inflammatory arthritis present?
- Inc WBC and ESR
- Acute painful onset
- Erythema, warmth, and tenderness
What are types of inflammatory arthritis?
- CTD—SLE, polymyositis, dermatomyositis, PSS, RA
- Crystal—gout and pseudogout
- Infectious
- Seronegative spondyloarthropathies
What are types of noninflammatory arthritis?
- OA, AVN
- Traumatic
- Joint tumors
- Hemophilia
- Metabolic: hemochromatosis, alkaptonuria, rheumatic fever, Wilson’s disease
What diseases are HLA-B27 positive?
- AS
- Reactive arthritis (Reiter’s syndrome)
- Psoriatic arthritis—HLA Cw6
- Enteropathic arthropathy
- Pauciarticular JRA
What is Ankylosing spondylitis?
Chronic, inflammatory rheumatic disorder of the axial skeleton affecting the sacroiliac joint and the spine
What is the hallmark finding of Ankylosing spondylitis?
Bilateral sacroiliitis
Who is affected by Ankylosing spondylitis?
- Males»_space; females
* More common in whites
What is the onset of Ankylosing spondylitis?
Late adolescent and early adulthood
What are the skeletal sites of involvement in Ankylosing spondylitis?
- SI joint
- Lumbar vertebrae
- Thoracic vertebrae
- Cervical vertebrae
What is the clinical presentation of Ankylosing spondylitis?
• Insidious onset, back pain, or tenderness in the bilateral SI joints
– Initially asymmetric then bilateral
• Sx for least 3 mo
• Lumbar morning stiffness that improves with exercise
• Dec lumbar lordosis and inc thoracic kyphosis
Which patients will develop cervical ankylosis?
Develops in 75% of the patients who have AS for 16 years or longer
What is the MC site of fracture in Ankylosing spondylitis?
Lumbar or lower cervical spine
What is enthesitis?
Inflammatory process occurring at the tendon insertion site onto bone
Where does enthesitis occur in AS?
Ischial tuberosity
Greater trochanter
ASIS
Iliac crests
Which joints are MC involved in juvenile AS?
Hip
Shoulder
What pulmonary condition can develop in AS?
Restrictive lung disease l/t dec chest expansion and diaphragmatic breathing
What is the MC extraskeletal manifestion of AS?
Acute iritis/iridocyclitis
What are extraskeletal manifestions of AS?
Fever/fatigue/wt loss Aortitis l/t fibrosis Conduction defects Apical plumonary fibrosis Amyloidosis Cauda equina syndrome C1 to C2 subluxation
What are lab findings in AS?
- HLA-B27 (+) in 90%
- RF (–) and ANA (–)
- Elevated ESR and CRP
- Normochromic normocytic anemia
Describe SI joint narrowing on radiographs in AS.
Symmetric
Erosions and sclerosis may lead to fusion
Describe pseudo-widening of the joint space on radiographs in AS.
– Subchondral bone resorption (blurring of joint line)
– Erosion sclerosis
– Calcification leading to ankylosis
What causes bamboo spine?
Ossification of the spinal ligaments, syndesmophyte formation, and ankylosis of the facet joints lead to complete fusion
Describe the appearance of syndesmophyte formation
Squaring of lumbar vertebrae’s anterior concavity
What causes syndesmophyte formation?
Ossification of the outer annulus fibrosis at the dorsolumbar and lumbosacral area and reactive bone sclerosis
Describe bone density in AS.
Associated osteopenia/ osteoporosis (bone washout)
What is Schober’s test used to detect?
Limitation of forward flexion and hyperextension of the lumbar spine
Describe how to perform a Schober’s test.
While standing erect, place a landmark midline at a point 5 cm below the iliac crest line and 10 cm above the illiac crest on a spinous processes. On forward flexion, the line should increase by > 5 cm to a total of 20 cm or more (from 15 cm).
What is considered a restriction on a Schobers test.
Inc <5 cm on forward spine flexion
How should patients with AS sleep?
Firm mattress
Sleep in prone position to keep spine straight/prevent spine flexion deformity
What type of PT should be used for AS patients?
– Spine extension-based exercises
– Swimming is ideal
– Joint protection
Which DMARDs can be used for AS?
Sulfasalazine Methotrexate
TNF inhibitors
What should be used to treat uveitis in AS?
Topical corticosteroid drops
What is the triad of Reactive arthritis?
- Conjunctivitis
- Arthritis
- Nongonoccal urethritis
(“Can’t see, can’t pee, can’t climb a tree”)
Who is typically affected by Reactive arthritis?
Males»_space; females
More common in Caucasian population
Which organisms cause Reactive arthritis?
– STDs: Chlamydia
– GI: Campylobacter, Yersinia, Shigella, Salmonella
– Also assoc w/ HIV
What can patients with reactive arthritis progress to?
3% to 10% of patients progress to AS
What is the onset of arthritis in reactive arthritis?
2-4 weeks after infectious event
Describe the feature of arthritis in Reactive arthritis.
Asymmetric Oligoarticular (<4 joints) Dactylitis Enthesopathies Low back pain: sacroiliitis
What are the MC joints involved in Reactive arthritis?
LE > UE joints
LE: knees, ankles, and small joints of the feet
UE: wrist, elbows, and small joints of the hand.
What can Reactive arthritis be confused with?
Plantar fasciitis
Describe the appearance of dactylitis.
Swollen, tender digits with a dusk-like blue discoloration
Which tendon is MC involved with enthesopoathy in reactive arthritis?
Achilles tendon
What are ocular disorders of reactive arthritis?
Conjunctivitis Iritis Uveitis Episcleritis Corneal ulceration
What is Balanitis circinata?
Small painless ulcers on the glans penis or urethritis in reactive arthritis
What is Keratoderma blennorrhagica?
Hypertrophic skin lesions on palms and soles of feet in reactive arthritis
What are Reiter’s nails?
Thickened and opacified, crumbling, nonpitting
What is seen in synovial fluid of reactive arthritis?
- Turbid
- Poor viscosity
- WBC 5,000 to 50,000 PMNs
- Inc protein
- Normal glucose
What is seen on labwork in reactive arthritis?
- Inc ESR
- RF (–) and ANA (–)
- normochromic normocytic anemia
- HLA-B27 (+)
What is seen on radiographs in reactive arthritis?
- “Lover’s heel”
- Ischial tuberosities and greater trochanter
- Asymmetric SI joint involvement
- Syndesmophytes
- Pencil-in-cup deformities of the hands and feet
What is a “Lover’s heel”?
Erosion and periosteal changes at the insertion of the plantar fascia and Achilles tendons
What is the treatment of reactive arthritis?
- NSAIDs (indomethacin)
- Abx: tetracycline or erythromycin
- Corticosteroids
- DMARDs
What % of patients with psoriasis develop psoriatic arthritis?
5-7%
Who is affected by psoriatic arthritis?
- Male=female
- 30 to 55 yo
- MC in white
What is associated with psoriatic arthritis?
HIV
Which joints are involved in psoriatic arthritis associated with HIV?
Foot and ankle MC and severe
What is the treatment of psoriatic arthritis associated with HIV?
– First-line NSAIDs
– No oral corticosteroids
– No methotrexate
Describe the skin and nail findings of psoriatic arthritis.
Erythematous, silvery scales over extensor surfaces
Nail pitting
What is Auspitz’s sign?
Gentle scraping of psoriatic lesions results in pinpoint bleeding
Describe the arthritis of psoriatic arthritis.
- Asymmetric monoarticular or oligoarticular
- Enthesopathy
- Spondylitis, sacroiliitis
Which joints are MC involved in psoriatic arthritis?
– Large joints: knee
– DIP involvement
What is Arthritis mutilans?
Osteolysis of the phalanges and metacarpals of the hand resulting in “telescoping of the finger”
What are lab findings of psoriatic arthritis?
HLA-B27 (+)
What is seen on radiographs in psoriatic arthritis?
- “Pencil-in-cup” DIP
- Asymmetric sacroiliitis l/t fusion
- “Fluffy periostitis”—hands, feet, spine, and SI joint
- Syndesmophytes
- Bone erosion
Describe rehab for psoriatic arthritis.
- ROM to all joints
* Do not abuse an inflamed joint as can l/t exacerbation
What is treatment for psoriatic arthritis?
- PUVA (long wave ultraviolet light)
- Steroids—oral steroids not proven, injection may help
- Anti-TNF antibodies (adalimumab, infliximab)
Which joints are affected in enteropathic arthropathy?
Large joints—knees, ankles, feet
When will enteropathic arthropathy typically resolve?
With bowel disease remission
What are extra-articular manifestations of enteropathic arthropathy?
- Erythema nodosa—Crohn’s
- Pyoderma gangrenosa—ulcerative colitis
- Painful deep oral ulcers
- Uveitis
- Fever and weight loss during bowel episodes
What is seen on lab work in enteropathic arthropathy?
- Anemia
- Inc ESR, CRP
- RF (–), ANA (–)
- HLA-B27 (+)
- (+) antineutrophil cytoplasmic antibodies (ANCAs) ~60% (antimyeloperoxidase)