title: Cementless alumina-on-alumina total hip arthroplasty in patients younger than 50 years: a 5-year minimum follow-up study.
abstract: Sixty-seven patients (78 hips) who were younger than 50 years underwent cementless total hip arthroplasty using a porous-coated acetabular cup, an alumina liner, a 28-mm alumina head, and a proximally porous-coated femoral stem. One patient (1 hip) died and 2 patients (3 hips) were lost to follow-up. The remaining 64 patients (74 hips) were followed for 5 to 6 years. Their mean age at the index operation was 37 years. The mean Harris hip score was 94 points at the time of final follow-up. Four patients (4 hips) had mild thigh pain. All acetabular and femoral components were bone-ingrown, and neither pelvic nor femoral osteolysis was identified. No fracture of the ceramic liner or head was identified. Wear of the ceramic components was undetectable in 27 hips in which measurement was possible.
authors.affiliation: Department of Orthopaedic Surgery, Gyeongsang National University College of Medicine, Chinju, South Korea.
authors.forename: Yong-Chan
authors.initials: YC
authors.lastname: Ha
authors.forename: Kyung-Hoi
authors.initials: KH
authors.lastname: Koo
authors.forename: Soon-Taek
authors.initials: ST
authors.lastname: Jeong
authors.forename: Jeong
authors.initials: J
authors.lastname: Joon Yoo
authors.forename: Young-Min
authors.initials: YM
authors.lastname: Kim
authors.forename: Hee
authors.initials: H
authors.lastname: Joong Kim
mesh_terms: D000328:Adult; D000537:Aluminum Oxide; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D020099:Coated Materials, Biocompatible; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016062:Porosity; D016896:Treatment Outcome
chemical_list: D020099:Coated Materials, Biocompatible; D000537:Aluminum Oxide