School of Medicine - Clinical MedicineOrthopaedic Surgery




The Department of Orthopeadic Surgery treats various types of musculoskeletal disorders, such as joint diseases, spinal/vertebral diseases, external wounds (traumas), orthopedic/surgical diseases of the limbs and peripheral nerve diseases. The number of surgeries per year is about 1,000. Professor Norio Kawahara, the Chair of the Department, and Senior Assistant Professor Masahito Kawaguchi specialize in spinal/vertebral diseases and have done many spinal surgeries, including advanced cases. Professor Tadami Matsumoto, Professor Ayumi Kaneuji, Associate Professor Toru Ichiseki and Senior Assistant Professor Kiyokazu Fukui are specialists in hip joint diseases and have performed many hip joint replacement and revision surgeries and osteotomy of hip joints on patients from all over Japan. Associate Professor Toru Ichiseki treats patients with shoulder joint diseases. Senior Assistant Professor Kentaro Hiromura treats orthopedic/surgical diseases of the limbs and peripheral nerve diseases. Areas of research include basic research on osteonecrosis of the femoral head, hip prosthesis, shoulder joint diseases and spinal cord regeneration.

Contact Information

TEL: 076-218-8138 +81-76-218-8138 / FAX: 076-286-4406 +81-76-286-4406 / Email:


Professor and Chair

  • KAWAHARA Norio 川原教授写真


  • MATSUMOTO Tadami


  • KANEUJI Ayumi

Associate Professor


Senior Assistant Professor

  • FUKUI Kiyokazu
  • HIROMURA Kentaro
  • KAWAGUCHI Masahito

Assistant Professor

  • TACHI Yoshiyuki
  • ORITA Yugo

Associate Professor

  • SHIMIZU Yoshiaki

Assistant Professor

  • TSUDA Ryoji
  • SOMA Daisuke
  • YONEZAWA Katsutaka

Research Achievements

Research Activities

  • T. Ichiseki, S. Ueda, Y. Yeda, M. Tsuchiya, A. Kaneuji, N. Kawahara
    Involvement of necroptosis, a newly recognized cell death type, in steroid-induced osteonecrosis in a rabbit model.
    International Journal of Medical Sciences. 2017; 14(2): 110-114
  • K. Fukui, A. Kaneuji, S. Ueda, T. Matsumoto.
    Should well-fixed uncemented femoral components be revised in infected hip arthroplasty? Report of five trial cases. Journal of orthopaedics. 2016; 13(4): 437-442
  • S. Ueda, T. Ichiseki, Y. Ueda, A. Kaneuji, N. Kawahara, T. Matsumoto.
    The timing of glucocorticoid-induced osteocytic cell necrosis under hypoxia.
    Int J Clin Exp Pathol. 2016; 9(7): 7470-7475
  • Y. Tachi, T. Okuda, N. Kawahara, N. Kato, Y. Ishigaki, T. Matsumoto.
    Expression of hyaluronidase-4 in a rat spinal cord hemisection model.
    Asian Spine J. 2015; 9: 7-13.
  • A. Kaneuji, T. Sugimori, T. Ichiseki, K. Fukui, E. Takahashi, T. Matsumoto. Rotational acetabular osteotomy for osteoarthritis with acetabular dysplasia: Conversion rate to total hip arthroplasty within twenty years and osteoarthritis progression after a minimum of twenty years.
    J Bone Joint Surg Am. 2015; 97: 726-732

External Research Funding

  • Research Grant for Intractable Diseases from the Ministry of Health and Welfare of Japan 2009-2013
    Title: Pathophysiological and genetical overall studies for prevention of idiopathic osteonecrosis of femoral head
    Co-Investigator: Tadami Matsumoto
  • Research Grant for Intractable Diseases from the Ministry of Health and Welfare of Japan 2017-2019
    Title: Genetical overall studies of idiopathic osteonecrosis of femoral head
    Co-Investigator: Ayumi Kaneuji
  • Grants-in-Aid for Scientific Research (C) 2015-2017
    Title: The molecular mechanism of steroid-induced osteonecrosis.
    Principal Investigator: Toru Ichiseki
  • Grants-in-Aid for Scientific Research (C) 2012-2014
    Title: Prevention of steroid-induced osteonecrosis by stem cell administration
    Principal Investigator: Toru Ichiseki
  • Grant from the Agency for Medical Research and Development (Translational Research Network Program) 2017-2018
    Title: Development of an intraosseous antibacterial implant with fluorinated diamond-like carbon (DLC)
    Research leader: Masahito Kawaguchi