title: Outcome of an uncemented hydroxyapatite coated hemiarthroplasty for displaced femoral neck fractures: a clinical and radiographic 2-year follow-up study.
abstract: OBJECTIVE
  Hemiarthroplasty is the preferred treatment for displaced femoral neck fractures (DFNF) in elderly patients. The use of uncemented stems remains controversial and issues regarding inferior fixation in osteoporotic bone, implant-related pain and decreased mobility have discouraged their use. There is limited evidence for the use of modern uncemented femoral stems in the treatment of DFNF, and we wished to investigate the clinical and radiographic performance of an uncemented hydroxyapatite coated hemiarthroplasty at 2-year follow-up.
  
  
  METHODS
  We included 97 consecutive patients who had an uncemented, hydroxyapatite coated hemiarthroplasty (Corail, Depuy) inserted during a 1-year period. Due to unwillingness or cognitive impairment (n = 6) and death before follow-up (n = 44), a total of 47 patients (39 females) with a mean age of 81 years were available.
  
  
  RESULTS
  At two year follow-up 38 of 47 patients lived in their own homes and the median New Mobility Score was 6 (range: 2-9). The median Visual Analogue Scale pain score was 0 (range: 0-5) at rest and 0 (range: 0-8) when walking. Patient satisfaction was a score of 9 (range: 2-10) on the VAS. Anterior or lateral thigh pain or groin pain was reported by 15 patients. The EQ-5D index score at follow-up was 0.72 (range: 0.16-1.00) and the EQ-5D Visual Analogue Score was 70 (range: 15-100). There were no signs of implant loosening in any of the 37 hips undergoing radiographic evaluation at follow-up.
  
  
  CONCLUSIONS
  The results suggest that an uncemented hydroxyapatite coated hemiarthroplasty can be used to treat displaced intracupsular femoral neck fractures with good clinical and radiographic outcomes at short term follow-up.
authors.affiliation: Department of Orthopaedic Surgery, Hvidovre Hospital, Kettegård Allé 30, Hvidovre, Denmark. j.e@dadlnet.dk
authors.forename: Jacob
authors.initials: J
authors.lastname: Eschen
authors.forename: Søren
authors.initials: S
authors.lastname: Kring
authors.forename: Michael
authors.initials: M
authors.lastname: Brix
authors.forename: Ilija
authors.initials: I
authors.lastname: Ban
authors.forename: Anders
authors.initials: A
authors.lastname: Troelsen
mesh_terms: D000203:Activities of Daily Living; D000369:Aged, 80 and over; D017760:Bone Malalignment / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D002484:Cementation; D005260:Female; D005265:Femoral Neck Fractures / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods*; D062785:Hemiarthroplasty / Q000295:instrumentation* / Q000379:methods*; D006801:Humans; D006882:Hydroxyapatites; D008297:Male; D010149:Postoperative Pain; D011183:Postoperative Complications; D011859:Radiography
chemical_list: D006882:Hydroxyapatites