A Comparative Study of Spatiotemporal Pattern and Kinematics of Human Gait between Normal Knee and Total Knee Arthroplasty

This study aims to compare the spatiotemporal pattern and kinematic data analysis of knee joint during gait between the normal knee and total knee arthroplasty (TKA) using three-dimension (3D) motion technique. A total of 10 subjects consisted of five normal knees and five total knee arthroplasty (TKA) was performed with the average body mass index (BMI) of 23.92±0.40 kg  (m 2 )  1 and 23.81±0.80 kg  (m 2 )  1 , respectively. The 3D technical analysis using software included Qualisys Track Manager (QTM) and Visual 3D were used to create the skeleton model for the analysis of the spatiotemporal and kinematic data. The measurement data were obtained and then compared between groups using statistical mean different analyses. According to the results of the spatiotemporal pattern, there was no statistically significant difference (P > 0.05) between the normal knee and TKA group except the speed, step time and stance time. For the kinematic analysis, the maximum average value of the flexion-extension angle in the normal knee and the TKA were 46 deg occurred in the swing phase at 73 percent of the gait cycle. In the standing phase, the TKA group displayed a slight change of flexion-extension angle than the normal knee. In addition, the maximum average value of angular velocity in the normal knee displayed higher than TKA during standing to swing phase. The results of this study provided basic information and useful for designing and various treatment of knee joints symptoms as well as the physical treatment and sports science.