title: Modular acetabular reconstructive cup in acetabular revision total hip arthroplasty at a minimum ten year follow-up.
abstract: OBJECTIVE
  Modular acetabular reconstructive cups have been introduced in an attempt to offer initial rigid fixation by iliac lag screws and ischial pegs, to support bone grafts with a flanged metal socket, and to restore original hip center in acetabular revision. The purpose of this study was to clarify minimum ten year follow-up results of this cup system with morsellised allografts in revision cases.
  
  
  METHODS
  We retrospectively investigated 54 acetabular revisions at a mean of 11 years (range, ten to 14 years). The indications were Paprosky's type 2B (eight hip), 2C (eight hips), 3A (23 hips), 3B (nine hips), and 4 (six hips).
  
  
  RESULTS
  Using aseptic loosening as the endpoints, the survival rate was 89.3 % (95 % CI 81-98). Radiographically, one type 3A hip, three type 3B hips and one type 4 hip showed aseptic loosening while no type 2 hips or no cemented cups showed loosening.
  
  
  CONCLUSIONS
  The modular reconstructive cups for acetabular revision showed bone stock restoration and stable implantation.
authors: Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, 565-0871, Suita, Japan. tsakai-osk@umin.ac.jp
authors: Takashi
authors: T
authors: Sakai
authors: Kenji
authors: K
authors: Ohzono
authors: Takashi
authors: T
authors: Nishii
authors: Masaki
authors: M
authors: Takao
authors: Hidenobu
authors: H
authors: Miki
authors: Nobuo
authors: N
authors: Nakamura
authors: Nobuhiko
authors: N
authors: Sugano
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging* / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods*; D001863:Bone Screws; D016025:Bone Transplantation; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D015994:Incidence; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies; D014184:Transplantation, Homologous; D016896:Treatment Outcome