RT Journal A1 Beebe, Kathleen S. A1 Uglialoro, Anthony D. A1 Patel, Neeraj A1 Benevenia, Joseph A1 Patterson, Francis R. T1 Mechanical Failure of the Repiphysis Expandable ProsthesisA Case Report JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2010 FD May 1 VO 92 IS 5 SP 1250 OP 1253 DO 10.2106/JBJS.I.00591 UL http://dx.doi.org/10.2106/JBJS.I.00591 AB The current treatment of osteosarcoma includes neoadjuvant chemotherapy followed by wide resection of the tumor and postoperative chemotherapy. While amputation of the extremity was once the mainstay of treatment, medical and surgical developments over the last several decades have led to the success of limb-salvage surgery1,2. In the very young patient, this has led to the challenge of achieving limb-length equality. Recently, the introduction of an endoprosthesis, expandable by noninvasive means, has allowed for reconstruction of the affected limb while addressing limb-length discrepancy in skeletally immature patients3.