[Intrapelvic dislocation of lag screw in gamma nailing].

Within the last decade, intramedullary nailing systems have gained enormous popularity in the treatment of fractures of the trochanteric region. However, these implants are not free of any complications. Commonly reported treatment failures include stress-derived femur fracture, rotational displacement, varus deformity of the femoral neck and head, and implant cutout through the femoral neck. So far, there are only five cases known in the literature describing dislocation of the medial leg screw into the pelvis. The patient history, operative intervention, and course are reported. The incidence of such cases is discussed. Modifications of intramedullary nailing systems are mentioned.