Posterolateral Rotary Instability of the Elbow in Adolescents: A Report of 2 Cases and Review of the Literature

CASES: The authors present 2 cases of chronic posterolateral rotatory instability (PLRI) of pediatric elbows successfully treated with lateral collateral ligament (LCL) reconstruction using semitendinosus tendon allograft, including the first documented case of LCL reconstruction in the setting of an Osborne-Cotterill lesion in a pediatric patient. Full resolution of PLRI was achieved, and the patients returned to preinjury full-contact sports at 5 months postoperatively. CONCLUSIONS: Few studies have reported LCL reconstruction in the setting of chronic PLRI in pediatric patients. The purpose of this report is to aid in the diagnosis and treatment of elbow PLRI and to describe a surgical option for recurrent PLRI in pediatric patients.