Lateral Robotic Unicompartmental Knee Arthroplasty

Robotic-assisted unicompartmental knee arthroplasty (UKA) is accurate and repeatable. Lateral UKA is still considered a challenge, as the lateral side of the knee has different anatomy and kinematics compared with the medial side. The lateral compartment of the knee is less constrained than the medial compartment and is therefore less tolerant for mobile-bearing implants and ACL deficiency. However, the long-term outcomes of lateral UKA are scarce. Moreover, the impact of patellofemoral joint degeneration on the outcome of lateral UKA is unknown. We report our preliminary results with fixed bearing robotic-assisted lateral UKA, which are encouraging in the short term.