title: One- or two-stage bilateral metal-on-metal hip resurfacing arthroplasty.
abstract: Patients considered suitable for total hip resurfacing arthroplasty often have bilateral disease. The peri-operative complications, transfusion requirements, hospital stay, outcome and costs in patients undergoing one-stage bilateral total hip resurfacing were compared with a group of patients undergoing a two-stage procedure. A total of 92 patients were included in the study, of which 37 (40%) had a one-stage and 55 (60%) had a two-stage resurfacing. There were no significant differences in age, gender, or American Society of Anaesthesiologists grade between the groups (p = 0.31, p = 0.23, p = 0.13, respectively). There were three systemic complications in the one-stage group (8.1%) and one in the two-stage group (1.8% of patients; 0.9% of procedures). There was no significant difference in the complication rate (p = 0.72) or the transfusion requirements (p = 0.32) between the two groups. The one-stage group had a reduced total hospital stay of five days (95% confidence interval 4.0 to 6.9; p < 0.001), reduced length of time to completion of all surgery of five months (95% confidence interval 2.6 to 8.3; p < 0.001), and the reduced cost was 35% less than that of a two-stage procedure. However, the total anaesthetic time was significantly longer for the one-stage group (p < 0.001; 95% confidence interval 31 to 52). This study demonstrates that consideration should be given to one-stage surgery for patients with bilateral symptomatic disease suitable for metal-on-metal hip resurfacing. A one-stage procedure appears to have benefits for both the patient and the hospital without additional complications.
authors: Research and Teaching Centre, Royal Orthopaedic Hospital, Bristol Road South, Northfield, Birmingham B31 2AP, UK. cwmcbryde@hotmail.com
authors: C W
authors: CW
authors: McBryde
authors: K
authors: K
authors: Dehne
authors: A M
authors: AM
authors: Pearson
authors: R B C
authors: RB
authors: Treacy
authors: P B
authors: PB
authors: Pynsent
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000191:economics / Q000379:methods*; D001803:Blood Transfusion; D002648:Child; D016001:Confidence Intervals; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D007431:Intraoperative Complications; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D012189:Retrospective Studies