Why the study?
What are the progressive changes in femoral head roundness during the healing phase of Legg-Calvé-Perthes disease?
Population
136 hips with Legg-Calvé-Perthes disease in the healing phase
Design
Cohort
Follow-up
3 to 4 years
Authors
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May support extended radiographic follow-up during reossification in Perthes disease; leaves open whether interventions alter flattening risk in high-risk patients.
What are the progressive changes in femoral head roundness during the healing phase of Legg-Calvé-Perthes disease?
The femoral head can undergo progressive flattening or rounding during the 3- to 4-year reossification phase of Legg-Calvé-Perthes disease, with flattening associated with older age, severe lateral pillar involvement, and prolonged reossification.
Herring et al. (1993) studied this question.
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