title: Reason and treatment of failure of proximal femoral nail antirotation internal fixation for femoral intertrochanteric fractures of senile patients.
abstract: The cause of postoperative failure after the treatment of femoral intertrochanteric fracture with proximal femoral nail antirotation (PFNA) was analyzed, and the reoperative methods were examined. Nine failures of 308 femoral intertrochanteric fracture patients with PFNA were treated with femoral prosthesis total hip replacement (THR) and reoperative internal fixation. All nine patients were analyzed to determine the cause of failure. The causes of failed internal fixation in the intertrochanteric-fractured patients included perforation of the helical blade into the hip joint in three cases, cutting-out of the helical blade exit outside in two cases, and hip varus as a result of cutting-out the helical blade in two cases. Seven patients with failed internal fixation were treated with THR. Two patients who had femoral shaft fractures at the end of the nail were treated with longer PFNA. Faulty operative procedures, unsatisfactory reductions, serious osteoporosis, and incorrect positioning of the helical blade were the most important factors responsible for the failed internal fixation. Satisfactory results were achieved with THR and refixation relative to the causes of the failed internal fixation.
authors.affiliation: Department of Orthopedic Surgery, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China.
authors.forename: J J
authors.initials: JJ
authors.lastname: Liu
authors.affiliation: Postdoctoral Research Station of Biomedical Engineering, School of Life Science and Technology, Tongji University, Shangai, China.
authors.forename: L C
authors.initials: LC
authors.lastname: Shan
authors.affiliation: Department of Orthopedic Surgery, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China.
authors.forename: B Y
authors.initials: BY
authors.lastname: Deng
authors.affiliation: Department of Orthopedic Surgery, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China.
authors.forename: J G
authors.initials: JG
authors.lastname: Wang
authors.affiliation: Department of Orthopedic Surgery, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China.
authors.forename: W
authors.initials: W
authors.lastname: Zhu
authors.affiliation: Department of Orthopedic Surgery, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China jjl1996@yeah.net.
authors.forename: Z D
authors.initials: ZD
authors.lastname: Cai
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005593:Fracture Fixation, Internal / Q000379:methods; D006620:Hip Fractures / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures; D011182:Postoperative Care; D011300:Preoperative Care; D019233:Retreatment; D017211:Treatment Failure; D016896:Treatment Outcome