Comparing cruciate-retaining total knee arthroplasty and cruciate-substituting total knee arthroplasty: A prospective clinical study

Abstract

Background and Objectives: Total knee arthroplasty (TKA) is an effective and terminal surgical treatment for arthritis of knee joint. The aim of this study was to evaluate the influence of Posterior Condylar offset (PCO) ratio on range of motion after posterior cruciate ligament (PCL) retaining TKA and PCL substitution TKA. Methods: This was a prospective trial, comparing PCL-substitution TKA with PCL-retaining PKA in patients requiring primary TKA. The study subjects were randomly allocated into two groups, 32 each. Baseline and endpoint Knee Society scores (KSS) were used to assess functional outcomes. Follow up assessments were conducted at baseline, 1 month, 3 months and 6 months after surgery. Results: The mean age of study subjects was 61.52 ± 7.48 years. In the cruciate substituting group, 61.29% (19) were men. In the cruciate retaining group 60.61% (20) were women. The posterior condylar offset ratio was significantly lesser in the cruciate substituting group (p