title: The Comparison of Compression Hip Screw and Bipolar Hemiarthroplasty for the Treatment of AO Type A2 Intertrochanteric Fractures.
abstract: OBJECTIVE
  The purpose of this study was to compare the outcomes of osteosynthesis using compression hip screw fixation versus bipolar hemiarthroplasty in AO type A2 intertrochanteric fractures.
  
  
  METHODS
  From March 2003 to December 2009, 89 patients were included in this study. They were treated using compression hip screws (43 cases) or bipolar hemiarthroplasty (46 cases). The mean age of patients was 77.7 years (65-94 years) and the mean follow-up period was 5.9 years (1-8.3 years). For comparison of the outcomes in the two groups, statistical analyses were performed with parameters including anesthesia time, operation time, amount of transfusion, hospital stay, general complications, clinical outcome, time of partial weight-bearing using a walker, and radiological failure rate.
  
  
  RESULTS
  Differences in the amount of transfusion, general complications, and clinical outcome (Merle d'Aubigné and Postel score) were not statistically significant between the two groups. The bipolar hemiarthroplasty group showed better results than the compression hip screw group for anesthesia time and the time of partial weight-bearing using a walker. Radiological failures were observed in hips in one case (2.2%) of bipolar hemiarthroplasty, and in four cases (9.3%) of compression hip screw fixation.
  
  
  CONCLUSIONS
  Among elderly individuals with AO type A2 intertrochanteric fractures, patients treated with bipolar hemiarthroplasty were able to perform early ambulation. However, no significant difference in operation time, amount of postoperative transfusion, clinical results, hospital stay, and radiological failure rate was observed between the bipolar hemiarthroplasty and compression hip screw fixation groups.
authors.affiliation: Department of Orthopedic Surgery, Hanyang University Hostpial, Hanyang University, Korea.
authors.forename: Yee-Suk
authors.initials: YS
authors.lastname: Kim
authors.affiliation: Department of Orthopedic Surgery, Hanyang University Hostpial, Hanyang University, Korea.
authors.forename: Jae-Seung
authors.initials: JS
authors.lastname: Hur
authors.affiliation: Department of Orthopedic Surgery, Hanyang University Hostpial, Hanyang University, Korea.
authors.forename: Kyu-Tae
authors.initials: KT
authors.lastname: Hwang
authors.affiliation: Department of Orthopedic Surgery, Hanyang University Hostpial, Hanyang University, Korea.
authors.forename: Il-Yong
authors.initials: IY
authors.lastname: Choi
authors.affiliation: Department of Orthopedic Surgery, Hanyang University Guri Hostpial, Hanyang University, Korea.
authors.forename: Young-Ho
authors.initials: YH
authors.lastname: Kim
keywords: Bipolar hemiarthroplasty; Compression hip screw; Femur; Intertrochanteric fracture