What factor is a strong prognostic indicator in Legg-Calvé-Perthes disease?
What factor is a strong prognostic indicator in Legg-Calvé-Perthes disease?
Age at onset, because if the onset of Legg-Calvé-Perthes disease occurs before 6 years of age, the restoration of a spherical femoral head is more likely; otherwise, degenerative osteoarthritis is probable.