Abstract:Objective To investigate the early clinical effect of femoral head replacement with biological long stem prosthesis in the treatment of elderly intertrochanteric fracture. Methods A total of Twenty-two elderly patients with intertrochanteric fractures treated from September 2015 to March 2019 were selected as the research objects.All patients underwent hemiarthroplasty with biological long stem prosthesis (APL non-cemented stem prosthesis made by Smith & Nephew company).Harris scores of hip joint were recorded at 1-, 3- and 6-month after operation.The excellent and good rates were counted and compared to evaluate the functional recovery in different stages after operation. Results The Harris hip score was (74.27±3.82) points one month after operation with the excellent and good rate of 18.18% and was (81.78±4.59) points three months after operation with the excellent and good rate of 59.09%.At 6 months after operation, the Harris hip score was（87.79±4.84）points, and the excellent and good rate was 86.36%.With the extension of time, the excellent and good rate of Harris hip function score gradually increased (P＜0.01). Conclusion In the treatment of elderly patients with intertrochanteric fracture, femoral head replacement with biological long stem prosthesis can effectively improve the function of the affected hip joint, reduce the time of lying in bed after trauma, enable the patients to get out of bed early, decrease the occurrence of bed related complications, promote the recovery of patients and have good effect at early follow-up after operation.