OBJECTIVE: To investigate the surgical resetting technique during the resetting of intertrochanteric fractures of types 31-A3.1 and 31-A3.2. METHODS: We retrospectively studied 74 cases of AO/OTA fracture type 31-A3.1 and 31-A3.2 intertrochanteric fractures admitted to our hospital from January 2007 to December 2010, 33 males and 41 females, with a mean age of 71 years (36-87 years), all treated with internal fixation with proximal femoral intramedullary nailing, and clinical and imaging findings were recorded. RESULTS: All 74 fracture reductions were performed under fluoroscopy, including 73 closed reductions and 1 limited incisional reduction. 65 patients were followed up for a mean of 14.5 months (8 to 23 months) after surgery, and fracture healing was observed in all cases at a mean of 7.4 months. The mean operative time was 75+4 minutes, the mean intraoperative blood loss was 135+5 ml, the mean number of fluoroscopic views was 24+3, and the mean Harris score for hip function was 91.4, with an excellent rate of 92.3%. CONCLUSION: 31-A3.1 and 31-A3.2 intertrochanteric fractures of the femur are sometimes difficult to close and reposition because the fracture does not involve the lesser trochanter, especially when the patient is young and muscular, and requires the aid of certain surgical repositioning techniques.