title: Impaction bone grafting for acetabular reconstruction: mean 5.5-year results in Japanese patients.
abstract: BACKGROUND
  We performed a retrospective outcome study on 23 consecutive acetabular reconstructions involving impaction bone grafting in Japanese patients.
  
  
  METHODS
  Two hips had cavitary defects, and 21 hips had combined segmental and cavitary defects. The mid-term follow-up was performed at a mean of 5.5 years postoperatively. The mean Merle d'Aubigné and Postel hip score had improved from 11.5 to 15.7 points at the final follow-up. Two hips showed migration at 30 months after surgery, and one of these was a candidate for re-revision due to symptomatic cup migration.
  
  
  RESULTS
  The Kaplan-Meier survival rate of the cup, with loosening and re-operation as the end points, was 91.3 and 95.7% at 5 years, respectively.
  
  
  CONCLUSIONS
  Acetabular impaction bone grafting is a reproducible technique in which surgeons should strictly follow the recommended technical procedure.
authors.affiliation: Department of Orthopedic Surgery, Hamamatsu Medical Center, Hamamatsu, Shizuoka, 432-8580, Japan. iwase-t@hmedc.or.jp
authors.forename: Toshiki
authors.initials: T
authors.lastname: Iwase
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Masui
authors.forename: Yukio
authors.initials: Y
authors.lastname: Torii
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kouyama
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D044466:Asian People; D016025:Bone Transplantation; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000601:surgery; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013997:Time Factors