Physeal Sparing Proximal Femoral Endoprosthetic Reconstruction with a Short Distal Segment: A Case Report

A custom endoprosthesis allowed for the preservation of the distal femoral physis with a short remaining metaphyseal segment after osteosarcoma resection in a 10-year-old boy. CASE This case illustrates a reconstructive alternative allowing physeal sparing with minimal remaining metaphyseal bone. At the three-year follow-up, the patient has remained complication-free with distal femoral growth maintaining symmetric limb length. When intercalary biologic reconstruction is not an option and the sacrifice of physis necessitates an extendible total femoral prosthesis, custom physeal sparing short segment press-fit fixation is an appropriate solution.