title: In total hip arthroplasty via the direct anterior approach, a dual-mobility cup prevents dislocation as effectively in hip fracture as in osteoarthritis.
abstract: The main purpose of this study was to compare the outcome of total hip arthroplasty (THA) via the direct anterior approach (DAA) using a dual-mobility cup (DMC) in patients with femoral neck fracture to those in patients undergoing elective THA for osteoarthritis.
  
  
  
  We retrospectively investigated 40 hips with femoral neck fracture (group A), and 81 hips with osteoarthritis (group B). THA via the DAA using the DMC was performed in both groups. A primary/secondary outcome variable were the presence of dislocation/operative time, intra- and/or peri-operative complication, and mortality.
  
  
  
  Dislocation did not occur in either group. The complication rate was slightly higher in group A than in group B, but not statistically significant.
  
  
  
  THA with the DMC using the DAA was as effective for femoral neck facture as it was for elective THA in patients with osteoarthritis.
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033. yhomma@juntendo.ac.jp.
authors.forename: Yasuhiro
authors.identifier: 0000-0002-7891-3024
authors.initials: Y
authors.lastname: Homma
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Tomonori
authors.initials: T
authors.lastname: Baba
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Yu
authors.initials: Y
authors.lastname: Ozaki
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Taiji
authors.initials: T
authors.lastname: Watari
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Hideo
authors.initials: H
authors.lastname: Kobayashi
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Hironori
authors.initials: H
authors.lastname: Ochi
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Mikio
authors.initials: M
authors.lastname: Matsumoto
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo Bunkyo-ku, Tokyo, Japan, 113-0033.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Kaneko
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005265:Femoral Neck Fractures / Q000601:surgery*; D005272:Femur Neck / Q000601:surgery; D006617:Hip Dislocation / Q000601:surgery; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D012086:Reoperation / Q000009:adverse effects; D012189:Retrospective Studies; D016896:Treatment Outcome
keywords: Direct anterior approach; Dislocation; Dual-mobility cup; Total hip arthroplasty