title: Cementless total hip arthroplasty in young Chinese patients: a comparison of 2 different prostheses.
abstract: Sixty-one primary cementless total hip arthroplasties were performed in 45 Chinese patients <40 years old. There were 27 Anatomic Medullary Locking (AML, Depuy, Warsaw, IN) prostheses and 34 Porous Coated Anatomic (PCA, Howmedica, Rutherford, NJ) prostheses. The average follow-up was 7.6 years (range, 3-11 years). Ten hips (16%) were reoperated; the reason was polyethylene wear with or without osteolysis in 7 hips. Osteolytic lesion was present in 34 hips (56%). The cumulative successful rate at 10 years was 67% using reoperation for any reason as the endpoint. The cumulative successful rate was 98%, however, if revision for aseptic loosening was used as the endpoint. The 2 prostheses did not show significant differences in most parameters except that the PCA hips had significantly more acetabular loosening (P =.02) and periprosthetic osteolysis (P =.01).
authors.affiliation: Division of Joint Replacement Surgery, Department of Orthopaedic Surgery, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong. pkychiu@netvigator.com
authors.forename: K Y
authors.initials: KY
authors.lastname: Chiu
authors.forename: W M
authors.initials: WM
authors.lastname: Tang
authors.forename: T P
authors.initials: TP
authors.lastname: Ng
authors.forename: K C
authors.initials: KC
authors.lastname: Poon
authors.forename: W Y
authors.initials: WY
authors.lastname: Ho
authors.forename: K M
authors.initials: KM
authors.lastname: Lee
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D005260:Female; D006622:Hip Prosthesis; D006723:Hong Kong; D006801:Humans; D008297:Male; D011474:Prosthesis Design; D011475:Prosthesis Failure; D018709:Statistics, Nonparametric; D016019:Survival Analysis; D016896:Treatment Outcome