RESUMEN
OBJECTIVE@#To investigate the effect of femoral offset (FO) on the postoperative functional results of proximal femoral nail antirotation (PFNA) in femoral trochanteric fractures.@*METHODS@#From May 2017 to June 2019, 112 patients receiving PFNA were analyzed, X-ray and CT examination of both hips were performed before operation, and X-ray examination of both hips of pelvis was performed on the first day after operation. Among them, 71 patients showed bilateral FO difference≤ 5 mm on positive X-ray film (group A), and 41 patients showed bilateral FO difference>5 mm (group B). There was no significant difference between two groups in gender, age, operative side, course of disease, Harris score of preoperative hip joint, preoperativeFO(@*RESULTS@#Patients in both groups were followed up for 12 months after surgery, and all patients reached the healing criteria. The difference of Harris score of the hip joint at 6 and 12 months after surgery was statistically significant (@*CONCLUSION@#In the treatment of trochanteric fractures with PFNA, the greater the difference of FO between the two sides, the worse the postoperative function of the patients. The appropriate FO(the difference of FO between the two sides ≤5 mm) can improve the postoperative function of the patients.