Posterior cruciate-retaining versus posterior stabilising prostheses for primary total knee arthroplasty in treating osteoarthritis: A systematic review and meta-analysis of randomised controlled trials.

Background: Total knee replacements (TKRs) are successful operations that utilities several operative techniques including cruciate retaining (CR) and posterior stabilising (PS) prostheses. To date, neither approach has proved superior. Techniques and implants are under constant evolution and new trials are published.