title: Comparative Study of Bipolar Hemiarthroplasty for Femur Neck Fractures Treated with Cemented versus Cementless Stem.
abstract: OBJECTIVE
  To compare and analyze clinical and radiologic outcomes of cemented versus cementless bipolar hemiarthroplasty for treatment of femur neck fractures.
  
  
  METHODS
  A total of 180 patients aged 65 years and over older who underwent bipolar hemiarthroplasty for treatment of displaced femur neck fractures (Garden stage III, IV) from March 2009 to February 2014 were included in this study. Among the 180 patients, 115 were treated with cemented stems and 65 patients with cementless stems. Clinical outcomes assessed were: i) postoperative ambulatory status, ii) inguinal and thigh pain, and iii) complications. The radiologic outcome was femoral stem subsidence measured using postoperative simple X-ray.
  
  
  RESULTS
  The cemented group had significantly lower occurrence of complications (postoperative infection,P=0.04) compared to the cementless group. There was no significant difference in postoperative ambulatory status, inguinal and thigh pain, and femoral stem subsidence.
  
  
  CONCLUSIONS
  For patients undergoing bipolar hemiarthroplasty, other than complications, there was no statistically significant difference in clinical or radiologic outcomes in our study. Selective use of cemented stem in bipolar hemiarthroplasty may be a desirable treatment method for patients with poor bone quality and higher risk of infections.
authors.affiliation: Department of Orthopedic Surgery, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
authors.forename: Jung-Yun
authors.initials: JY
authors.lastname: Choi
authors.affiliation: Department of Orthopedic Surgery, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
authors.forename: Yerl-Bo
authors.initials: YB
authors.lastname: Sung
authors.affiliation: Department of Orthopedic Surgery, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
authors.forename: Joo-Hyung
authors.initials: JH
authors.lastname: Kim
keywords: Bipolar hemiarthroplasty; Cemented stem; Cementless stem; Femoral neck fractures