抄録
In the field of biomechanics is performed elucidating motion analysis of normal knee joints. These are not reported motion analysis targeting sports activity Therefore, this study performed in vivo six-degrees-of-freedom motion analysis for natural knee joints with high precision using an image matching technique. The image matching technique was performed determining the strength of correlation between the X-ray images from a flat panel detector and the computational simulated image from three-dimensional gray-scale model reconstructed using computed tomography. In this report, we analyzed six-degrees-of-freedom motion of golf swing activity targeting five normal knee joints. From the results of six-degrees-of-freedom motion, the maximum external angle of knee joints was confirmed about 14 deg degrees at back-swing, and the maximum internal angle was confirmed about 23.1 deg degrees at end of follow through. In the trajectory of transepicondylar axis, pivot was moved to central, medial, and lateral. We could be observed different kinematic of normal knee in golf swing by this technique.
