What is Partial Knee Replacement? Partial knee replacement or unicompartmental knee replacement is a less-invasive surgery to replace a localized arthritis or damage to one of the compartments of the knee—most commonly the inner (medial), outer (lateral), or kneecap (patellofemoral) compartment. The surgery has a quicker recovery and fewer complications compared to total knee replacement. Advantages of Partial Knee Replacement ✅ Targeted Treatment – Individual shattered segments of the knee are replaced individually without harming adjacent healthy bone, cartilage, and ligaments. ✅ Smaller Incisions – Less invasive method avoids scarring and optimizes aesthetic outcome. ✅ Faster Recovery – Patients can recover in less time than with total knee replacement. ✅ Natural Knee Motion – Leaving healthier parts of the knee intact allows for a more natural movement. ✅ Decreased Post-Operative Pain – Due to less tissue damage and exacting surgical methods, less pain at recovery time.