Research progress of failure and revision of unicompartmental knee arthroplasty

Abstract

To conclude the failure factors of unicompartmental knee arthroplasty (UKA), and summarize the research progress of revision surgery. The literature on UKA at home and abroad in recent years was reviewed to summarize its risk factors, treatment methods, including the evaluation of bone loss, prosthesis selection, and surgical techniques. The factors inducing UKA failure mainly include improper indications, technical errors, and others. The application of digital orthopedic technology can reduce failures caused by surgical technical errors and shorten the learning curve. There are a variety of options for revision surgery after UKA failure, including polyethylene liner replacement, revision with UKA or total knee arthroplasty, with adequate preoperative evaluation prior to implementation. The biggest challenge in revision surgery is the management and reconstruction of bone defects. There is a risk of failure in UKA, which needs to be treated with caution and should be determined according to the type of failure.