Abstract: Objective：To investigate the effect of preoperative hemoglobin A1c(HbA1c) level on the clinical prognosis of hip fracture in elderly patients with type 2 diabetes mellitus.Methods：The clinical data of 97 elderly patients with hip fracture complicated with type 2 diabetes mellitus who underwent surgery in our hospital from January 2014 to October 2019 were retrospectively analyzed.They were divided into group A(HbA1c<6.5%，n=47) and group B(HbA1c≥6.5%，n=50) according to their preoperative HbA1c level,VAS score of pain at 2,7 and 14 days after operation，Harris score of postoperative hip joint function,incidence of postoperative complications,operation time,hospital stay,suture removal time and intertrochanteric fracture healing time were analyzed and compared between the two groups.〖WTHZ〗Results〓〖WTBZ〗The VAS score of pain at 2,7 and 14 days after operation,postoperative complication rate,hospitalization time,suture removal time and complete intertrochanteric fracture healing time in group B were significantly higher than those in group A after operation,while the Harris scores at 1,3 and 6 months after operation in group B were significantly lower than those in group A(P＜0.05),but there was no significant difference in operation time between the two groups(P>0.05).Conclusion：For the elderly hip fracture patients with type 2 diabetes mellitus,the preoperative high level of HbA1c may indicate a poor clinical prognosis.Paying attention to the preoperative HbA1c level and taking relevant measures can promote the recovery of hip joint function,reduce the incidence of postoperative complications.

Key words: hip fractures, type 2 diabetes, hemoglobin A1c, elderly, surgery, prognosis