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28 Cards in this Set
- Front
- Back
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What part of the hip is typically effected in OA
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the superior-lateral part
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Can OA occasionally be purely medial and not superior-lateral
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yes (15%)
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What are the hallmarks of osteoarthritis of the hips
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superior lateral or medial narrowing (15% of the time), osteophytes, subchondral cyst
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What are the arthropathies that should be suspected if there is complete narrowing of the hip
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RA (most common)
JIA CPPD AS Infection |
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If there is complete narrowing of the hip joint and SI joint fusion what should be suspected
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AS
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If there is complete hip joint narrowing that is unilateral what should be suspected
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CPPD
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Does CPPD effect the pubis symphysis
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yes (very common)
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What is the typical age of a person with CPPD
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older than 50
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What are the findings of CPPD of the hips
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complete narrowing
osteophytes subchondral cyst (more so than OA) older than fifty |
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What condition does whiskering and tram trak sign occur with
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AS
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What are the 3 fat planes surrounding the hip
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the gluteus medius (laterally)
iliopsoas (medially) obturator internus (medially) |
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What is a clue that there is hip pathology
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the distance between the tear drop and the femoral head should be equal (no more that 1 mm difference assuming that the patient is not rotated)
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What are some characteristics of infection related arthropathy
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unilateral
diffuse narrowing osteopenia teardrop distance may be increased bulging fat planes |
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Beside the pubis symphsis what other unusual joint does CPPD effect
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there is narrowing of the patella femoral joint, and a saucerization of the patella directly above (this is seen on lateral plain film views)
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Does CPPD typically cause a lot of calcification
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yes (tendon, ligament, menisci, capsules)
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What is the classic presentation of CPPD of the knee joint
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medial narrowing of the knee on AP and patella femoral narrowing on lateral
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Is it possible to have just patella femoral narrowing seen on lateral but no narrowing of the knee
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yes, and this would be CPPD
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What are 3 arthropathies that will have increased signal on GRE
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hemophilia and PVNS (pigmented villonodular synovitis), trauma
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What is the classic location for PVNS
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the knee (80%)
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Is PVNS usually monoarticular
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yes
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What is the typical age group for PVNS
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20-50y
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What are the radiographic findings of PVNS
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monoarticular
knee 20-50 decreased (black) signal GRE lack of joint space narrowing subchondral cyst |
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What is the treatment for PVNS
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synovectomy if diffuse
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What causes the arthropathy in a pt with hemophilia
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chronic hemathrosis and intra-osseous hemorrhage
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What are the radiographic findings in a pt with hemophilia
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osteopenia
increased density in effusions enlarged epiphyses subchondral cyst secondary OA |
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What condition will you get a prominent interchondral knotch
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hemophilia
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Does hemophilia causes narrowing of the medial and lateral knee and cause squaring of the patella
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yes
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What looks exactly like hemophila (has squaring of the patella and effects the medial and lateral knee, enlarged epiphyses big effusion)
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JIA
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