title: Femoral revision with an extensively hydroxyapatite-coated femoral component.
abstract: Between December 1996 and April 2003, 26 consecutive femoral component revisions in 24 patients were performed with an extensively hydroxyapatite-coated femoral stem. Two patients were lost to follow-up, and two patients died of unrelated causes. Of the 22 femoral revisions in 20 patients, there was a 0% incidence of mechanical loosening at average follow-up of 3.2 years (2-6.3 years). The Harris Hip Score improved from 59 (36 to 83) to 95 (84 to 100) postoperatively (p < 0.001). Rate of revision was 18.2% (4.5% for sepsis, 9.1% for instability, and 4.5% for polyethelene wear). All 22 femoral components had evidence of bone ingrowth. The extensively coated hydroxyapatite stem in this series produced excellent clinical results with a low incidence of thigh pain (4.5%) and severe stress shielding (4.5%).
authors.affiliation: Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 E 70th Street, New York, NY 10021, USA. GulottaL@HSS.EDU
authors.forename: Lawrence V
authors.initials: LV
authors.lastname: Gulotta
authors.forename: Andreas
authors.initials: A
authors.lastname: Baldini
authors.forename: Kristin
authors.initials: K
authors.lastname: Foote
authors.forename: Stephen
authors.initials: S
authors.lastname: Lyman
authors.forename: Bryan J
authors.initials: BJ
authors.lastname: Nestor