Long-Term Survival of Semi-Constrained Total Knee Arthroplasty for Revision Surgery

• Published in: The Journal of arthroplasty Vol. 29; no. 5; pp. 1005 - 1008
• Main Authors: Wilke, Benjamin K., MD, Wagner, Eric R., MD, Trousdale, Robert T., MD
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.05.2014
• Subjects: Adult; Aged; Aged, 80 and over; Arthroplasty, Replacement, Knee - methods; aseptic; Female; Humans; Knee Joint - physiopathology; Knee Joint - surgery; Knee Prosthesis; Male; Middle Aged; Orthopedics; Prosthesis Design; Range of Motion, Articular; Reoperation; revision; semi-constrained; total knee arthroplasty; total knee arthroplasty; aseptic; semi-constrained; revision
• ISSN: 0883-5403; 1532-8406
• DOI: 10.1016/j.arth.2013.10.025

Abstract Semi-constrained implants provide stability in the setting of soft-tissue deficiency in revision total knee arthroplasty (TKA). This study evaluated our institution’s long-term survival results with a semi-constrained implant used in the revision TKA setting. 234 semi-constrained revision total knee arthroplasties were performed in 209 patients. The average follow-up was 9 years. Forty repeat revisions were performed. 5-year survival was 91% and 10-year survival was 81%. Male gender significantly increased the risk of revision. At 10 years the average range of motion, pain level, and Knee Society score improved significantly ( P < 0.001). Ninety percent of patients reported an improvement in their knee. The semi-constrained implant used in revision knee arthroplasty has acceptable implant survival and functional outcomes in the long-term follow-up period.