Primary exeter total hip arthroplasty in patients with small femurs: a minimal of 10 years follow-up.
One hundred and twelve hips in 101 Chinese patients received primary cemented Exeter total hip arthroplasty (Howmedica, Hong Kong). The implant had a collarless, double-tapered and polished stem. Seventy-five hips in 67 patients were available for assessment. The average age at operation was 63.7 years. The commonest diagnosis was avascular necrosis. The average follow-up was 12.8 years (range, 10 to 16.5 years). The Harris score improved from a preoperative average of 39.8 to 82.3 at the last follow-up. Stem subsidence within the cement mantle occurred in 9.3% of the cases and none of these stems had other evidence of loosening. Eight hips (six stems and two cups) in seven patients were revised because of loosening at five to 14 years postoperatively. The survival rate was 93.3% and 86% at 10 and 15 years respectively. Oversized stems and incomplete cement mantle might account for the loosening. Stems of a smaller size have been made available to this population and hopefully this will improve the results further.
Chiu
Kwok Hing
KH
Department of Orthopaedics and Traumatology, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, N.T., Hong Kong.
Shen
Wang Yui
WY
Cheung
Kin Wing
KW
Tsui
Hon For
HF
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements / Q000627:therapeutic use; D019544:Equipment Failure Analysis; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000401:mortality; D011474:Prosthesis Design; D011859:Radiography; D016019:Survival Analysis
D001843:Bone Cements