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16 Cards in this Set
- Front
- Back
What patient population is at greatest risk for slipped capital femoral epiphysis (SCFE)?
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African-American boys
Age 10 to 16 |
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What are the two primary risk factors?
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Family history
Obesity |
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How often is involvement bilateral?
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25%
|
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What two other disorders are associated with SCFE development?
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Hypothyroidism
Renal disease |
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What are two other iatrogenic associations?
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Growth hormone therapy
Radiation treatment |
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What two effects does growth hormone have on the growth plate?
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Stimulates proliferation
inhibits maturation (keeps growth plate open) |
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What are two thyroid hormone effects?
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Stimulates proliferation
Stimulates maturation (closure of the growth plate) |
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What four SCFE patient groups ought to have an endocrine evaluation?
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<10 years old
>16 years old <10th percentile for weight Bilateral involvement |
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What does a biopsy of zone of provisional calcification show?
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Granulation tissue between columns
|
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In which two directions does the femoral neck slip?
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Anterior
Superior |
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In which two directions does the epiphysis slip?
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Posterior
Inferior |
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What are the three grades of slip?
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I: <% 1/3
ll: % 1/3 to % 1/2 lll: >% 1/2 |
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What key physical exam finding is suggestive of SCFE?
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Obligate external rotation with
flexion |
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Compare the rate of osteonecrosis with stable and unstable SCFE?
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Stable: 0% develop AVN
Unstable: 50% develop AVN |
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When performing surgery on a patient <10 years old, what procedure should be considered?
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Pinning of contralateral side also
|
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Compare postoperative weight-bearing status with stable and unstable SCFE.
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Stable: weight—bearing as tolerated (WBAT)
Unstable: non-weight-bearing (NVVB) |