Affiliation: | (1) Department of Orthopedic Surgery, Niigata University Hospital, Niigata, Japan;(2) Department of Orthopedic Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan;(3) Department of Orthopedic Surgery, Niigata Central Prefectural Hospital, Joetsu, Japan;(4) Division of Orthopedic Surgery, Graducate School of Medical and Dental Science, Niigata University, 1-751 Asahimachi, Niigata 951-8510, Japan |