Anterior Knee Pain in Mobile Bearing Versus Fixed Bearing in TKA

Osteoarthritis is the most common cause of chronic joint disease, and its incidence has increased due to the high average life expectancy, in addition to the high incidence of obesity. Total knee arthroplasty is currently an accepted treatment for severe degenerative conditions and there are various implant systems with special features depending on component geometry, degree of fit of the articular surfaces, and fixation techniques. A tibial component with mobile polyethylene has been developed as an alternative to fixed polyethylene because it has theoretical advantages in terms of increasing the range of motion, reducing wear conditions, and reducing the incidence of anterior knee pain when the articular surface of the patella is not resurfaced.

Inclusion Criteria:Patients with expected primary total knee arthroplastyExclusion Criteria:Mediolateral instabilityInfective arthritisSevere deformityRevisionPatients with severe obesity according to the Body Mass Index (BMI < 40).