Final Flashcards
This is a chonic, inflammatory arthritis primarily affecting the articulations & ligs of the spine & pelvis
Ankylosing Spondylitis
Ankylosing Spondylitis is AKA?
Marie-Strumpell, Bechterev, rhizomelic spondylitis
Ankylosing Spondylitis is a common cause of low back pain in what group of people?
Young males (15-35 yrs of age; 9:1 M-to-F)
Where is aching/stiffness M/C w/ Ankylosing Spondylitis?
In sacral region
What is the typical clinical presentation of Ankylosing Spondylitis?
Pain at max in morning Pain/tenderness over bony prominences Chest pain (costochondral involvement) Fatigue,low grade fever Iritis, heart problems, upper lung fibrosis
What % of pt’s w/ Ankylosing Spondylitis have peripheral involvement?
up to 50%
What are typical lab findings w/ Ankylosing Spondylitis?
Positive HLA-B27 (90-95% of cases)
ESR
Negative for RF
What are the characteristic sites of involvement for Ankylosing Spondylitis?
SI joints (M/C; hallmark) Apophyseal joints Costovertebral joints Pubic symphysis Discovertebral Manubriosternal joints
What are basic features of Ankylosing Spondylitis radiographically in the SI joints?
Reactive Sclerosis Osteoporosis Bony ankylosis Erosions Typically bilateral & symmetrical
What are the most diagnostic views for Ankylosing Spondylitis in the SI joints?
PA angulated spots or SI views
What are the stage 1 changes in SI joints w/ Ankylosing Spondylitis?
Pseudo-widening of joint
What are the stage 2 changes in SI joints w/ Ankylosing Spondylitis?
Erosive & sclerotic changes
What are the stage 3 changes in SI joints w/ Ankylosing Spondylitis?
Ankylosis 50% (7-23 years)
What radiographic signs are assoc. w/ ankylosing spondylitis in the SI?
Ghost joint margins
Star sign
Erosive changes w/ ankylosing spondylitis in the SI are seen more on what part of the joint?
Iliac side of the joint & lower 1/3rd of the joint
Where are the earliest spinal manifestations radiographically of ankylosing spondylitis?
Thoracolumbar region (M/C)
This is an erosion at the corner of a vert. body assoc. w/ ankylosing spondylitis
Romanus lesion
Vert. bodies become what shape w/ ankylosing spondylitis?
Squared contour, barrel shaped
This radiographic sign is d/t osteitis in the spine of a pt w/ ankylosing spondylitis
Shiny corner sign
Ossification of the outer edges of the disc in a pt w/ ankylosing spondylitis is called what?
Marginal syndesmophytes
Names assoc. w/ ankylosing spondylitis in the spine?
Bamboo spine, Trolley-track, dagger sign
Type of fx assoc. w/ ankylosing spondylitis in the spine?
Carrot-stick fx
Lesion that is assoc. w/ ankylosing spondylitis that looks like an infection & is M/C in the C-spine
Anderson lesion
This arthropathy is assoc. w/ ulcerative colits & crohn’s disease
Enteropathic arthropathy
Enteropathic Arthropathy affects what group of people?
Young adults
What is a typical clinical symptom of enteropathic arthropathy?
Peripheral arthralgias w/ rapid resolution (knee, ankle, elbow, wrist)
What % of time is there spinal involvement w/ enteropathic arthropathy?
5%
What lab test is positive w/ enteropathic arthropathy?
HLA-B27
How does enteropathic arthropathy appear radiographically?
Similar to ankylosing spondylitis (bilateral & symmetrical)
Common skin disorder assoc. w/ joint disease characterized by peripheral joint destruction & deformity, sacroiliitis, & non-marginal syndesmophytes
Psoriatic Arthritis
What is the pathophysiology of Psoriatic Arthritis?
Similar to RA
Pannus affects cartilage less &erosions are smaller & slower in development
Periostitis
What are the M/C joints affected by Psoriatic Arthritis?
DIP of hand & foot
What age group is M/C affected by Psoriatic Arthritis?
20-50 yrs of age
What are clinical features of Psoriatic Arthritis?
Skin lesions characteristic of psoriasis
Nail changes (incidence of arthritis increased)
Acute & chronic joint pain especially in DIP joints
Morning stiffness
Sausage digit
What are laboratory features seen w/ Psoriatic Arthritis?
Positive HLA-B27 (30%)
Hyperuricemia
Increased ESR
What is the M/C pattern of involvement w/ Psoriatic Arthritis?
Polyarthritis w/ DIP joint involvement
What are some radiographic features seen w/ Psoriatic Arthritis?
Soft tissue swelling (sausage digit) Normal bone mineralization Erosions & tapering of bone ends Juxta-articular fluffy periostitis Joint space may be wide Non-marginal syndesmophytes Sacroiliitis (bilateral asymmetrical) Sparring of pos. joints except C-spine
What is one radiographic feature seen w/ Psoriatic Arthritis but not RA?
Juxta-articular fluffy periostitis
Fluffy periostitis is AKA?
Mouse Ears
What radiographic feature is highly suggestive of Psoriatic Arthritis?
DIP & PIP ankylosis
What is an uncommon radiographic finding w/ Psoriatic Arthritis?
SI ankylosis
Type of deformity assoc. w/ Psoriatic Arthritis?
Pencil & cup deformity AKA mortar & pestal deformity
What view can you see marginal syndesmophytes?
AP view
This is AKA as Reactive arthritis?
Reiter’s Syndrome AKA Conjuctivo-urethro-synovial syndrome
What triad is assoc. w/ Reiter’s?
arthritis, conjuctivitis, & non-specific urethritis (Can’t see, can’t pee, can’t dance w/ me)
Reiter’s usually follows what?
Sexual intercourse or rarely certain types of dysentery
What ratio does Reiter’s affect males to females?
50:1 M-to-F
What age group is affected by Reiter’s?
20-40 yrs of age
Where is arthritis M/C w/ Reiter’s?
Lower extremity
Rash that is assoc w/ Reiter’s that appears on the palms of the hand & bottom of the feet?
Keratodermia blennorrhagica
What is the M/C clinical presentation of Reiter’s?
Conjuctivitis
What lab test is positive in 75% of cases of Reiter’s?
HLA-B27
What are radiographic features of Reiter’s?
Lower extremities (MTP, IP, calcaneus, knee, ankle)
SI (bilateral asymmetrical)
Spine (thoracolumbar)
Non marginal syndesmophytes, Soft tissue swelling, Osteoporosis, marginal erosions, uniform decrease of joint space, periosititis
What is one radiographic feature common w/ Reiter’s but not psoriatic?
Osteoporosis
Condition assoc. w/ Reiter’s where there is periostitis on calcaneous
Lover’s Heel
Reiter’s & psoriatic involve more peripheral joints or more axial joints?
Peripheral
Disorder of purine (adenine, guanine) metabolism that results in hyperuricemia which causes the deposition of monosodium urate crystals into joints & soft tissues
Gout (Gouty Arthritis)
What are the pathomechanics of Gout?
Tophi irritates the synovium which leads to hyperplasia & formation of granulation tissue (pannus) which leads to erosions & cartilage destruction
Which type of gout is caused by a metabolic disorder where hyper-uricemia is caused by uric acid overproduction
Primary
Who is affected M/C from Gout?
Males 20:1 age 30-60
Gout attacks are precipitated by what?
Surgery Trauma Dietary or alcohol excess Starvation Drugs (salicylates)
This particular group of women are prone to Gout?
Postmenopausal women on diuretics
What are some clinical signs of Gout?
Prodromal irritability Sudden onset of pain 20% develop renal calculi Red, hot, dry, swollen, tender joint Local edema Sometimes fever 20% have tophi around joints & ear cartilage
What is the clinical presentation of a pt w/ asymptomatic hyperuricemia?
No s/s
Predisposed to gouty arthritis
Renal calculi
S/S of acute gouty arthritis
Affects 1st MTP joint (M/C location to see gout)
Swollen, hot, dry, joint
Rapid recovery
Type of gout where radiographic changes are most frequently encountered
Polyarticular gouty arthritis
Type of gout that is not common seen & lasts on avg. 10-12 years
Chronic tophaceous gout
Hydroxyapapitite Deposition Disease (HADD) is M/C seen where?
Supraspinatus tendon (calcification about greater tuburosity of humerus
What are lab findings w/ gouty arthritis?
Elevated uric acid Moderate leucocytosis Increased ESR Low grade proteinuria Monosodium urate crystals in joint fluid
What % of gout attacks are monoarticular?
90%
What % of gout attacks involve the big toe?
75%
What are radiographic findings assoc. w/ gout?
Asymmetrical w/ lower extremity predilection
Joint effusion
Uniform joint narrowing (late)
Bone erosions (marginal, periarticular, intraosseous)
Soft tissue masses
What is a radiographic sign assoc. w/ gout?
Overhanging edge sign
What are 2 radiographic presentations that differentiates gout from RA?
Periarticular bone erosions & a lack of juxta-articular osteoporosis
What is a radiographic sign seen in RA & gout?
Spotty Carpal Sign
Where is the M/C location to see CPPD?
Knee
What is the key radiographic feature of CPPD?
Chondrocalcinosis (calcification in cartilage)
What are 3 presentations of CPPD?
Acute-symptomatic (pseudogout)
Asymptomatic-chondrocalcinosis
Chronic-Pyrophosphate Arthropathy
Which presentation of CPPD do you see bone changes in?
Chronic (Pyrophosphate Arthropathy)
What would you see radiographically that would suggest a chronic presentation of CPPD?
Degenerative changes in a joint that is not a primary location of OA (MCPs, glenohumeral, radiocarpal joints)
If you have degenerative changes in the knee & they’re localized to the ________ joint then CPPD/Pyrophosphate Arthropathy should be a consideration
Patellofemoral joint
This is a bilateral symmetrical SI disorder predominately found in multiparous females
Osteitis Condensans ilii
Osteitis Condensans Ilii is AKA?
Hyperostosis Triangularis ilii
What causes Osteitis Condensans Ilii?
Combination of hormone-induced ligamentous laxity & increased mechanical joint stress that leads to low-grade inflammatory & sclerotic changes involving the iliac subchondral bone
What is the typical clinical presentation of Osteitis Condensans Ilii?
A multiparous woman b/w 20-40 yrs of age w/ chronic LBP & stiffness
What labs are typically seen w/ Osteitis Condensans Ilii?
Labs are typically normal
Where is Osteitis Condensans Ilii seen in the SI joint on xray?
Seen on the lower 2/3rds or 1/3rd
What differentiates Osteitis Condensans Ilii from sacroillitis?
Sclerosis but no marginal erosions