About the Authors

Masatoshi Teraguchi

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Noriko Yoshimura

Affiliation Department of Joint Disease Research, 22nd Century Medical & Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113–8655, Japan

Hiroshi Hashizume

hashizum@wakayama-med.ac.jp

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Shigeyuki Muraki

Affiliation Department of Joint Disease Research, 22nd Century Medical & Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113–8655, Japan

Hiroshi Yamada

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, 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, 113–8655, Japan

Akihito Minamide

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Yuyu Ishimoto

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Keiji Nagata

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Ryohei Kagotani

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Sakae Tanaka

Affiliation Department of Orthopaedic surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113–8655, Japan

Hiroshi Kawaguchi

Affiliation Japan Community Healthcare Organization Tokyo Shinjuku Medical Center, 5–1 Tsukudo-chome, Shinjuku-ku, Tokyo, 162–8543, Japan

Kozo Nakamura

Affiliation Rehabilitation Services Bureau, National Rehabilitation Center for Persons with Disabilities, 1 Namiki 4-chome, Tokorozawa City, Saitama, 359–8555, Japan

Toru Akune

Affiliation Rehabilitation Services Bureau, National Rehabilitation Center for Persons with Disabilities, 1 Namiki 4-chome, Tokorozawa City, Saitama, 359–8555, Japan

Munehito Yoshida

Affiliation Department of Orthopaedic surgery, Wakayama Medical University, 811–1 Kimiidera, Wakayama, 641–8509, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MT NY HH SM HY HO AM YI K. Nagata RK ST HK K. Nakamura TA MY. Performed the experiments: MT NY HH SM HY HO YI K. Nagata RK TA. Analyzed the data: MT NY HH SM HO. Contributed reagents/materials/analysis tools: MT NY HH SM. Wrote the paper: MT.