Abstract:

Objective To analyze the method，effect，bone metabolism and hemorheology of posterolateral minimally invasive total hip arthroplasty for femoral neck fracture in the elderly. Methods According to the random number table method，98 elderly patients with femoral neck fracture who underwent total hip arthroplasty in our hospital from January 2019 to July 2021 were divided into observation group and control group，with 49 cases in each group. Posterolateral conventional approach was used in the control group and posterolateral minimally invasive approach was used in the observation group. The clinical indexes，pain degree，hip function，bone metabolism， hemorheology，balance function and complication rate were compared between the two groups. Results Compared with the control group，the observation group had smaller incision，less intraoperative bleeding，shorter first time out of bed and shorter hospital stay（P < 0.05）；After treatment，compared with the control group，the observation group had lower pain and better hip function（P < 0.05）；After treatment，the improvement of bone metabolism and hemorheological indexes in the observation group were better than those in the control group（P < 0.05）；After treatment，the balance function of the observation group was higher than that of the control group（P < 0.05）；There was no significance between the two groups when compared the incidence of complication（P > 0.05）. Conclusion Total hip arthroplasty through posterolateral minimally invasive approach was effective for elderly femoral neck fractures. It could effectively alleviate the pain of patients，improve bone metabolism，promote blood circulation， facilitate the recovery of hip function and reduce the dysfunction of body balance. 

Key words:

posterolateral minimally invasive approach, total hip arthroplasty, old age, femoral neck fracture, bone metabolism, hemorheology