Why the study?
Does the extent of subchondral fracture predict the eventual extent of femoral head involvement in children with Legg-Calvé-Perthes disease?
Does the extent of subchondral fracture predict the eventual extent of femoral head involvement in children with Legg-Calvé-Perthes disease?
The extent of the subchondral fracture in early Legg-Calvé-Perthes disease accurately predicts the eventual extent of femoral head resorption, supporting a simple two-group prognostic classification.
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Supports early prognostic classification in Legg-Calvé-Perthes disease; leaves open prospective validation before guiding treatment.
Salter et al. (1984) studied this question.