Cementless hemispheric hydroxyapatite-coated sockets for acetabular revision.
This study describes our experience with a hydroxyapatite-coated uncemented hemispherical component used for revision of 72 patients with aseptic loosening of the acetabular component. Preoperative Paprosky classification of the acetabular defects was 1 type I, 35 type II, and 36 type III; according to American Academy of Orthopaedic Surgeons, 14 segmental, 10 cavitary, and 48 combined. The mean follow-up was 7.6 years (range, 5.0-13.0). Complications were seen in 7 cases (9.6%). Seventy acetabular components (97.2%) showed bone ongrowth on the radiographs. The survival rate was 90.8% after a mean follow-up of 7.6 years (range, 5.0-13.0) when revision for any reason is the end point (confidence interval, 80.5%-100%) and 98.1% (confidence interval, 94.5%-100%) when aseptic loosening of the cup is the end point. We conclude that hydroxyapatite-coated cups for acetabular revision show promising results.
Geerdink
Carel H
CH
Department of Orthopaedic Surgery and Traumatology, Atrium Medical Centre, CX Heerlen, The Netherlands.
Schaafsma
Jelle
J
Meyers
Will G M
WG
Grimm
Bernd
B
Tonino
Alphons J
AJ
D000077:Acetabulum / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D001672:Biocompatible Materials; D017886:Durapatite; D006622:Hip Prosthesis; D006801:Humans; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
D001672:Biocompatible Materials; D017886:Durapatite