Abstract
Introduction: Although being debated for many years, the superiority of Posterior Cruciate-Retaining (CR) Total knee Arthroplasty (TKA) and Posterior Cruciate - Stabilizing (PS) TKA remains controversial. The primary objective of this study was to compare functional outcome in patients who underwent primary total knee arthroplasty surgery using posterior stabilized and cruciate retaining implants. Material and method: Sixty diseased osteoarthritis knees in 42 patients were included in the study, with 30 cases (Knees) operated with CR prosthesis and 30 cases (Knees) with PS Prosthesis. The two groups were then compared using disease specific functional scores; 2011 knee society score. Pain, range of motion, any flexion, varus, valgus deformity, instability at knee joint was assessed preroperatively and postoperatively. Functional outcome (e.g. walking, climbing stairs) was assessed. Result: Postperative objective knee score and range of motion was significantly better in PS group than CR group, with significant p value. No significant difference in functional outcome between both the groups was seen. Conclusion: No significant difference in the functional outcome is seen between both the groups. Keywords: Posterior cruciate stabilizing, posterior cruciate retaining, total knee arthroplasty
Highlights
Being debated for many years, the superiority of Posterior Cruciate-Retaining (CR) Total knee Arthroplasty (TKA) and Posterior Cruciate - Stabilizing (PS) TKA remains controversial
Proponents of Cruciate-Retaining; CR prosthesis assert that PCL retention preserves more normal knee kinematics [1], improved proprioception [2,3], superior Knee stability (PCL preventing anterior translation of the femur on the tibia) and is more of bone conserving Procedure whereas the proponents of PCL Stabilized; PS prosthesis assert that Posteriorstabilized implants with a polyethylene post and femoral cam to replace the role of the PCL, has controlled replication of the femoral rollback
Patients with age group 55 to 70 years, Osteoarthritis radiological grade III&IV, painful knees with inability to perform routine activities and willing to giving consent for both CR and PS were included in the study; whereas patients with sepsis of the knee joint or inflammatory arthritis, Patients with local skin lesions, Revision Total knee arthroplasty and Patients with prior PCL injury were excluded From the study
Summary
Being debated for many years, the superiority of Posterior Cruciate-Retaining (CR) Total knee Arthroplasty (TKA) and Posterior Cruciate - Stabilizing (PS) TKA remains controversial. The primary objective of this study was to compare functional outcome in patients who underwent primary total knee arthroplasty surgery using posterior stabilized and cruciate retaining implants. Multiple studies have addressed differences in knee range of motion following cruciate retaining and posterior stabilized primary knee replacements. The current literature has not demonstrated any significant difference in early functional outcome between posterior stabilized andcruciate retaining knee replacements.
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