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Comparison of ender nails, dynamic hip screws, and Gamma nails in the treatment of peritrochanteric femoral fractures.

Three hundred seventy-six patients with peritrochanteric fractures treated over a 10-year period were reviewed. In 85 patients treated with Ender nailing, the most frequent complications were leg shortening (34), external rotation failure (21), and postoperative distal gliding of the nails (7). In 183 patients treated with dynamic hip screws or a 95 degree condylar or a 130 degree blade plate, 3 presented with infection, 5 with instability, and 4 with femoral head necrosis. In 105 patients treated with Gamma nailing, the most serious complications were infections (3), inward rotation failure (2), postoperative bleeding at the insertion site (2), and shaft fracture (1). Because of its inherent instability, Ender nailing is no longer used. The implantation technique for the dynamic hip screw is safer and simpler than the various models of the ASIF blade plate. However, the dynamic hip screw has been superseded by the Gamma nail because of its absolute stability. In the beginning, Gamma nailing was technically more demanding with a higher number of intraoperative complications. In this study, the number of malalignments did not differ significantly between the dynamic hip screw (14) and the Gamma nail (11), but was high with Ender nailing (56).