Comparison of Cruciate-Sacrificing vs Posterior-Stabilized Total Knee Replacement: A Retrospective Study

Abstract

Introduction: Total knee replacement (TKR) is a common surgical procedure in modern orthopaedics. There are two most commonly used implants in TKR: posterior cruciate ligament (PCL)-retaining or the Cruciate Retaining (CR) knees and posterior stabilized (PS) knees in which the Posterior Cruciate Ligament is not retained, and a mechanism in the implant stabilizes the knee. In this study we try and compare the clinical outcomes of CR and PS knees by following up patients who have undergone TKR. Materials and Methods: In this study we have retrospectively reviewed patients who have undergone CR or PS TKR at a single tertiary care center in southern India. Patients were called at one year post surgery for the assessment, and were assessed primarily using the Knee Society Score (KSS). Results: A total of 200 patients were included in the study. There were 100 patients in the CR group and 100 patients in the PS group. The mean KSS at 1 year was 90 in the CR group and 85 in the PS group. Conclusion: This study found that there was no significant difference in clinical outcomes between CR and PS knees at 2 years of follow-up. These findings suggest that either type of knee replacement can be a safe and effective option for patients who are considering TKR. Limitations: This study was limited by its retrospective design. Additionally, the study was conducted at a single academic medical center, and the results may not be generalizable to all patients who undergo TKR.