Johnson DB, et al. - Researchers performed a retrospective review of 21 patients, under the age of 60 years, that underwent primary semi-constrained Total knee arthroplasty (TKA) to assess patient-reported outcomes, functional recovery, and implant survival in this population. Knee Society Scores (KSS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores were 94.7 and 15.7, respectively, at an average follow-up of 66 months. As per outcomes, the use of a semi-constrained TKA as a primary implant in young patients, in which the knee cannot be effectively balanced with standard releases, results in positive patient-reported outcomes. In addition, there was no evidence of loosening at mid-term follow-up.