The Effect of the Ratio of Waist Circumference to Thigh Circumference in Obese Patients on the Therapeutic Efficacy of Medial Unicompartmental Knee Arthroplasty for Knee Osteoarthritis.

Background: Medial unicompartmental knee arthroplasty (UKA) is a surgical procedure that replaces only the damaged medial compartment of the knee joint, preserving the healthy lateral compartment. Previous studies have investigated the impact of body mass index (BMI) on the efficacy of UKA for knee osteoarthritis, but the effect of the ratio of waist circumference to thigh circumference in obese patients has not been reported. This study aimed to explore the impact of the waist-to-thigh ratio on the efficacy of medial UKA in obese patients with knee osteoarthritis.