1School of Medicine, CHA University, Pocheon, South Korea
2New Horizon Biomedical Engineering Institute, Myongji Hospital, Goyang, South Korea
3Department of Orthopaedic Surgery, Ewha Womans University Seoul Hospital, Seoul, South Korea
4Division of Mechanical and Biomedical Engineering, Ewha Womans University, Seoul, South Korea
5Department of Orthopaedic Surgery, Myongji Hospital, Hanyang University College of Medicine, Goyang, South Korea