To analyze, categorize and propose treatment strategies for nonunion occurring after internal fixation of peritrochanteric fractures of the femur.

The author collected cases with nonunion after peritrochanteric internal fixation between 2005 and 2020. 20 women and 35 men, with an average age of (44±16) years, were treated with corresponding strategies according to the cause of the bone nonunion. All patients were followed up clinically.

According to the cause of the bone nonunion, corresponding surgical strategies were adopted. The operation time was (122±22) min, and the amount of blood loss was (823±209) ml. 52 patients received intraoperative blood transfusions, and the average amount of blood transfusion was 423.6 ml. All fractures healed except in patients with joint replacement. The preoperative Harris score of the hip joint was (40.4±6.1) points, and the final postoperative follow-up Harris score was (88.5±2.4) points; the preoperative VAS score was (7.2±1.0) points; the final postoperative follow-up VAS score was (1.1±0.8) points; The preoperative SF-36 score was (42.0±7.2), and the SF-36 score at the last follow-up after surgery was (84.8±3.7) points, both of which were statistically significant.

For the nonunion related to internal fixation of femoral peritrochanteric fractures, it is necessary to analyze the causes and formulate treatment strategies, which can ultimately effectively reduce the pain of the patient's hip joint and effectively restore the function of the hip joint.