A retrospective analysis of reversed femoral Less Invasive Stable System (LISS) for treatment of subtrochanteric femoral fracture

PurposeThis retrospective study aimed at investigating the indications, the surgical techniques and clinical results of treatment for unstable subtrochanteric fractures with reverse Less Invasive Stable System-distal femur (LISS-DF).MethodsA total of twenty-six unstable subtrochanteric fracture patients were fixed with reverse LISS-DF from April 2005 to April 2008, including 17 (65%) males and 9 (35%) females with an average age of 43 years (ranged 35–56 years). Among them, 15 (57.7%) patients suffered road traffic accidents, and the remaining 11 (42.3%) patients had fall-related injuries. There were 16 patients with 32-A3.3 type, 4 with 32-A3.1 type and six with 32-A2.3 type fractures according to the AO classification.ResultsAll patients were followed up after surgery for 28 months (ranged 24–35 months). All of the incisions healed primarily, and no postoperative complications were found, such as coax vara and femoral head perforation of screws. The average recovery time of all patients was 4 months (ranged 2–7 months), and the average Harris score was 85 points (ranged 71–98 points).ConclusionsReverse LISS-DF is an effective operation for treatment of unstable subtrochanteric femoral fracture (AO classification, 32-A3.3, 32-A3.1 and 32-A2.3). Its advantages are minimal blood loss and reliable fixation.