Gait Pattern Comparison of Cruciate-retaining and Posterior-stabilized Arthroplasties

Gait Pattern Comparison of Cruciate-retaining and Posterior-stabilized Total Knee Arthroplasties: Gait Analysis With a Smartphone Application

In total knee arthroplasty (TKA), the posterior-cruciate ligament-retaining (CR) and posterior-cruciate-ligament stabilized (PS) techniques are widely used depending on the individual preference of the surgeon. Comparative analysis of these two techniques is a major topic of investigation in arthroplasty research. The hypothesis of the present study is that compared with the CR technique, the PS technique is associated with a worse gait pattern. Smart-phone based gait analysis and patient-reported functional outcomes are evaluated in patients undergoing total knee arthroplasty with a CR and a PS technique, at 3, 6, and 12 months postoperatively.

Patients undergoing total knee arthroplasty are randomized to posterior-cruciate ligament-retaining (CR) and posterior-cruciate-ligament stabilized (PS) groups by generating random numbers with Microsoft Excel. The patients are/will be evaluated preoperatively and at 3, 6, and 12 months postoperatively, with knee scores (KSS and KOOS), life quality (SF-12), and smart-phone based gait analysis. All data will be calculated as mean and standard deviation values. The Student's t-test will be used for statistical analysis of the patient data. Statistical calculations will be performed using SPSS vn.22.0 software (IBM SPSS Statistics for Windows, Version 22.0. Armonk, NY, USA).

Posterior-cruciate-ligament is retained in one arm and sacrificed in another arm during total knee arthroplasty

Gait analysis is made using the Gait Analyzer version 0.9.95.0 (Control One LLC, NM, USA) smartphone application

Gait analysis is made using the Gait Analyzer version 0.9.95.0 (Control One LLC, NM, USA) smartphone application

Gait analysis is made using the Gait Analyzer version 0.9.95.0 (Control One LLC, NM, USA) smartphone application

Knee Society Score (KSS) (has two different subscale : Knee and Function 100-80: Excellent 79-70:Good 69-60:Fair below 60:Poor )

Knee Society Score (KSS) (has two different subscale : Knee and Function 100-80: Excellent 79-70:Good 69-60:Fair below 60:Poor )

Knee Society Score (KSS) (has two different subscale : Knee and Function 100-80: Excellent 79-70:Good 69-60:Fair below 60:Poor )

Inclusion Criteria: Clinical diagnosis of unilateral primary knee osteoarthritis Age 55 to 85 years Must be able to walk without support Exclusion Criteria: Rheumatological joint diseases Previous knee surgery Neuromuscular diseases Bilateral knee osteoarthritis Insufficiency of knee collateral ligaments.