A 6-year-old boy from rural Maharashtra presents with a 3-month history of progressive limp and mild left hip pain, worse after play. Parents report he was previously active but now avoids running. On examination, left hip shows mild flexion contracture, positive Trendelenburg sign, and internal rotation is restricted. Radiographs show flattening of the left femoral head with a radiolucent crescent sign. What is the most likely diagnosis?
An 8-year-old boy is referred to orthopedics for management of left Legg-Calvé-Perthes disease diagnosed 2 months ago. Radiographs show Catterall Group III involvement with 60% of the femoral head affected. The child is compliant with physiotherapy but has persistent pain on weight-bearing and restricted hip abduction. Which of the following is the most appropriate next step in management?
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