Comparison of Clinical Outcomes and Safety of Single-stage Bilateral and Unilateral Unicompartmental Knee Arthroplasty

Unicompartmental knee artroplasty (UKA) is a method with high patient satisfaction and successful results, which is used in the surgical treatment of medial joint osteoarthritis accompanied by complete thickness cartilage loss (1,2). It is a less invasive procedure with shorter operation time (3), less blood loss, and without touching cartilage, bone, and ligaments in other parts of the knee, compared with total knee arthroplasty (TKA). In addition, stay in hospital is shorter and rehabilitation of the patients are faster with UKA (4-6). Although long-term results reveal that revision rate is a bit higher in UKA; UKA have important advantages such as lower morbidity and mortality rate and providing a more physiological joint compared with TKA (1,7). ABSTRACT