About the Authors

Yoshiki Asai

Affiliation Department of Orthopedic Surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama City, Wakayama, Japan

Shunji Tsutsui

stsutsui1116@gmail.com

Affiliation Department of Orthopedic Surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama City, Wakayama, Japan

Hiroyuki Oka

Affiliation Department of Medical Research and Management for Musculoskeletal Pain, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Noriko Yoshimura

Affiliation Department of Joint Disease Research, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Hiroshi Hashizume

Affiliation Department of Orthopedic Surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama City, Wakayama, Japan

Hiroshi Yamada

Affiliation Department of Orthopedic Surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama City, Wakayama, Japan

Toru Akune

Affiliation Rehabilitation Services Bureau, National Rehabilitation Center for Persons with Disabilities, 4–1 Namiki, Tokorozawa City, Saitama, Japan

Shigeyuki Muraki

Affiliation Department of Joint Disease Research, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Ko Matsudaira

Affiliation Department of Medical Research and Management for Musculoskeletal Pain, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Hiroshi Kawaguchi

Affiliation Japan Community Health Care Organization Tokyo Shinjuku Medical Center, 5–1 Tsukudocyo, Shinjuku-ku, Tokyo, Japan

Kozo Nakamura

Affiliation Rehabilitation Services Bureau, National Rehabilitation Center for Persons with Disabilities, 4–1 Namiki, Tokorozawa City, Saitama, Japan

Sakae Tanaka

Affiliation Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Munehito Yoshida

Affiliation Department of Orthopedic Surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama City, Wakayama, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: YA S. Tsutsui HO NY HH HY TA SM KM HK KN S.Tanaka YM. Data curation: YA HO NY HH TA SM. Formal analysis: YA S. Tsutsui HO NY HH. Investigation: YA. Methodology: YA S. Tsutsui HO NY HH HY. Project administration: NY KN S. Tsutsui YM. Resources: HO. Software: HO. Supervision: NY YM. Validation: YA S. Tsutsui HO NY HH. Visualization: YA. Writing – original draft: YA. Writing – review & editing: S. Tsutsui HO.