Cementless total hip arthroplasty in young Chinese patients: a comparison of 2 different prostheses.
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).
Chiu
K Y
KY
Division of Joint Replacement Surgery, Department of Orthopaedic Surgery, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong. pkychiu@netvigator.com
Tang
W M
WM
Ng
T P
TP
Poon
K C
KC
Ho
W Y
WY
Lee
K M
KM
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