1 Department of Orthopedic Surgery, Pusan National University Yangsan Hospital, 179 Guduk-ro, Seo-gu, Busan 49242, the Republic of Korea.
2 Department of Orthopedic Surgery, Pusan National University Hospital, 20 Geumo-ro, Mulgeum-eup, Yangsan 50612, the Republic of Korea.
3 Department of Orthopedic Surgery, Pusan National University Hospital, 20 Geumo-ro, Mulgeum-eup, Yangsan 50612, the Republic of Korea; Departement of Orthopedic Surgery, Pusan National University School of Medicine, Yangsan, the Republic of Korea. Electronic address: shwoo7853@naver.com.