Introduction
Total knee arthroplasty (TKA) is a successful operation for osteoarthrosis. Typically, the knee can be balanced using posterior stabilized or cruciate retaining implants. However, in patients with severe deformity or ligamentous laxity, this cannot be obtained, and more constrained devices are needed. Semi-constrained implants, such as the Total Condylar III (TCIII) provide increased coronal stability. Outcomes in young (<60 years old) patients, following a primary semi-constrained TKA are not well reported in the literature. The purpose of this study was to evaluate patient reported outcomes, functional recovery, and implant survival in this population.