To compare 2-year patient-reported outcomes after cementless versus cemented total knee arthroplasty (TKA) using implants of the same design, assessing average outcomes and differences across the outcome distribution.
Approach:
Study design and participants: Prospective, non-randomised, single-institution study of 109 consecutive primary unilateral TKAs for end-stage osteoarthritis: 54 cementless and 55 cemented.
Intervention and follow-up: All procedures used the same implant design and were performed by one surgeon. Outcomes were assessed through 24 months, including the Oxford Knee Score (OKS), Forgotten Joint Score-12 (FJS-12), and time to functional satisfaction.
Group allocation: Fixation was selected according to surgeon preference; younger patients were more often assigned cementless implants. Groups differed significantly in age, sex distribution, and BMI.
Key Findings:
The supplied article context describes the study design and methods but does not provide outcome results.
Interpretation:
The study was designed to test whether average joint-awareness outcomes were similar while the proportion of patients with the poorest outcomes differed between fixation methods.
Limitations:
Non-random allocation may introduce selection bias and confounding.
The cohorts differed significantly in age, sex distribution, and BMI.
The study was conducted at one institution and included 109 TKAs.
