Two-Staged Femoral Deformity Correction and Lengthening with Intramedullary Magnetic Nail in the Setting of Multiple Enchondromatosis

Multiple enchondromatosis (ME), also known as Ollier disease, is a rare developmental disorder characterized by the formation of multiple enchondromas of usually hypercellular nature and often aggressive histologic appearance. The lesions can originate from almost any bone, usually show asymmetrical distribution, and often develop in proximity to growth plates, thereby disturbing normal limb growth. Clinical manifestations are highly variable, including skeletal deformities, limb length discrepancies, or potential risk of malignant transformation to chondrosarcoma. In this case, we present an ME patient who underwent a two-stage surgical treatment for tumoral involvement, femoral deformity, and limb length discrepancy. Following extensive intralesional tumor resection, a standard intramedullary (IM) trauma nail and an IM magnetic motorized nail were used for deformity correction and lengthening, respectively.