MSK Orals Review

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Anonymous
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75055
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MSK Orals Review
Updated:
2011-03-24 19:16:03
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Radiology oral board review
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MSK radiology oral board review
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  1. Describe Ficat's classification. What is it used for?
    • Used to stage osteonecrosis.
    • Stages:
    • 1. Normal to slightly incr or decr density
    • 2. Mixed osteopenia & sclerosis
    • 3. Subchondral collapse ("crescent sign")
    • 4. Articular collapse
    • 5. Degenerative joint disease
  2. AVN etiologies
    • Trauma
    • SLE
    • alcoholism
    • pancreatitits
    • pregnancy
    • Gaucher's
    • Cushing's
    • Caisson's disease
  3. Osgood-Schlatter disease aka...
    Osteochondrosis of tibial tuberosity
  4. Radiologic hallmark of hyperparathyroidism? MC locations?
    • Subperiosteal bone resorption.
    • Acro-osteolysis
    • Radial surface of middle phalanges
    • Distal clavicle
    • Medial aspect of femur, humerus, tibia
    • Distal metaphysis of radius, ulna
  5. MC seronegative spondyloarthropathy?
    additional info?
    • Ankylosing spondylitis. "Bamboo Spine" is an Aunt Minnie.
    • Dz onset 15-35yo. M>>F.
    • 90% HLA-B27+

    Presentation: Low back pain/stiffness
  6. Hallmark of ankylosing spondylitis?
    Sacroiliitis is hallmark of disease.

    Sacroiliac joint is classically the first joint involved in ankylosing spondylitis.
  7. Bamboo spine
    Ossification of annulus fibrosis.

    Characteristic of ankylosing spondylitis.
  8. Inflammed angry-looking joint on radiograph. DDx?
    • Septic arthritis
    • Hemophilia
    • JRA

    Effusion from hemophilia (hemorrhage) is more radiodense than simple effusion.

    Septic joint and acute hemarthrosis can present the same (F, incr WBC, warmth, tenderness, etc).
  9. DDx for syndactyly
    (can you name 3 or 4?)
    • Apert's
    • Ellis-van Creveld
    • Down
    • Fanconi's
    • Laurence-Moon-Biedl
    • Pierre-Robin
    • T13
    • T18
    • NF
    • Absent radius syndrome
    • Acrocephalopolysyndactyly
    • Chondrodysplasia punctata

    CANT PuT up the FADE-away
  10. Albers-Schonberg Disease
    Osteopetrosis -

    Rare hereditary bone dz.

    Failure of spongiosum to form properly gives characteristic radiographic appearance.

    • "Sandwich vertebra"
    • "Erlenmeyer flask deformity"
    • "Bone in bone"
  11. "Erlenmeyer Flask"
    Osteopetrosis
  12. "Sandwich vertebra"
    Osteopetrosis
  13. "Bone within Bone"
    Osteopetrosis

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