Multivariate analysis of osteonecrosis of femoral head after operation for femoral neck fracture in adults
Objective To investigate the related risk factors of osteonecrosis of femoral head(ONFH)after operation for femoral neck fracture in adult patients.Methods The clinical data of 150 patients with femoral neck fracture admitted to our hospital from January 2018 and July 2021 were retrospectively selected.The patients were divided into the necrosis group and the survival group based on whether ONFH occurred or not.The clinical data including gender,age,BMI,time from injury to operation,Garden's classification,whether internal fixation was removed or not,timing of internal fixation removal,posterior tilt angle of femoral head,and quality of postoperative fracture reduction of patients in the two groups were collected and compared.Univariate and unconditional binary Logistic regression analysis were conducted.Results Among 150 cases of adult femoral neck fracture patients,41 cases developed ONFH(27.33%)after operation.Univariate analysis revealed that BMI,time from injury to operation,Garden's classification,posterior tilt angle of femoral head,timing of internal fixation removal,and quality of postoperative fracture reduction were closely related to the occurrence of ONFH(P<0.05).Multivariate Logistic analysis showed that BMI≥25 kg/m2,type Ⅲ or Ⅳ of Garden's classification,quality of postoperative fracture reduction grade B or C,and timing of internal fixation removal<2 years were the independent risk factors for ONFH after operation for femoral neck fracture in adults.Conclusion The incidence of ONFH after operation for femoral neck fracture in adults is high.BMI,Garden's classification,quality of postoperative fracture reduction,and timing of internal fixation removal can all affect the occurrence of ONFH after operation for femoral neck fracture.Clinical interventions targeting these related factors should be strengthened to reduce the incidence of ONFH and improve patients'quality of life.
femoral neck fractureosteonecrosis of femoral headrisk factoradults