Revision of failed metal-on-metal total hip arthroplasty using cemented arthroplasty: a mean 10-year follow-up of 157 consecutive patients. Issue 1 (January 2021)

• Record Type: Journal Article
• Authors: Lin, Jinluan; Huang, Chunlong; Yu, Weiguang; Han, Guowei; Liu, Xiangzhen; Zeng, Xianshang
• Is Part Of: Journal of international medical research. Volume 49:Issue 1(2021)
• Publication Date: 2021-01
• Subjects: Conversion -- revision -- metal-on-metal -- outcome -- complication -- total hip arthroplasty; Medicine -- Periodicals; Pharmacology -- Periodicals; 610.5
• DOI: 10.1177/0300060520969478
• Languages: English
• ISSNs: 0300-0605

Abstract

Objective: This study was performed to assess the outcomes of Asian patients who underwent conversion from metal-on-metal total hip arthroplasty (MoM-THA) to cemented THA (CTHA). Methods: One hundred and fifty-seven consecutive patients (157 hips) who underwent CTHA following primary MoM-THA from January 2005 to February 2015 were retrospectively analysed. The primary endpoints were the clinical outcomes. Follow-ups occurred at 3 months, 6 months, 1 year, 2 years, and then every 2 years following revision of MoM-THA. Results: The mean follow-up after conversion was 10 years (range, 5–14 years). Statistically significant improvements in the mean Harris hip score were observed between the preoperative and final follow-up evaluations (62.71 ± 13.85 vs. 84.03 ± 16.21, respectively). The major orthopaedic complication rate was 16.5% (26/157). Six (3.8%) patients underwent revision at a mean of 3.5 ± 1.3 years after conversion, predominantly because of prosthesis loosening or recurrent dislocation. Nine (5.7%) patients developed prosthesis loosening at a mean of 2.6 ± 1.1 years following conversion, two of whom requested revision surgery. Eleven (7.0%) patients developed prosthesis dislocation, four of whom requested revision surgery. Conclusion: CTHA may yield favourable functional outcomes and a reduced rate of major orthopaedic complications.