Orthopedics

What we do

To keep pace with rapidly advancing medical technologies and deliver the highest standard of care, the Department of Orthopedic Surgery at Kameda Medical Center is subspecialized by anatomical regions, tissues, and disease types.

Rather than relying solely on general orthopedic care, our department brings together fellowship-trained subspecialists across 5 core clinical divisions to provide precise, state-of-the-art medical and surgical treatments.

Specialized Clinical Divisions & Lead Specialists

1. Bone & Soft Tissue Tumor Division

Lead Specialist: Dr. Hiroshi Kuroda

Clinical Scope: Diagnosis and surgical treatment of benign and malignant tumors arising in bones, muscles, nerves, adipose tissues, and blood vessels. We welcome patients seeking expert second opinions for suspected or diagnosed bone and soft tissue neoplasms.

2. Lower Extremity & Joint Reconstruction Division

Lead Specialists: Dr. Hideo Eguro & Dr. Kosuke Kubo

Clinical Scope: Comprehensive care for hip and knee joint disorders (e.g., osteoarthritis, joint degeneration). Designed for individuals suffering from hip/knee pain that limits daily mobility, walking, shopping, or travel.

3. Orthopedic Trauma & Fracture Division

Lead Specialists: Dr. Tomokazu Nakatani, Dr. Takashi Kameoka & Dr. Akito Tokumo

Clinical Scope: High-energy trauma (traffic accidents) and acute fractures, dislocations, or sprains from sports and daily falls. Specialist intervention significantly improves long-term functional recovery, particularly for complex fractures or cases with persistent symptoms after previous surgeries elsewhere.

4. Spine & Spinal Cord Division

Lead Specialist: Dr. Yasuo Kanamori

Clinical Scope: Specialized care for disorders spanning the cervical spine (neck) to the lumbar spine and pelvis. We offer comprehensive options from conservative therapies (block injections) to advanced Minimally Invasive Spine Surgery (MISS) using spinal endoscopes.

5. Hand Surgery & Microsurgery Center

Center Director: Dr. Hayato Kuno

Clinical Focus: Comprehensive evaluation and delicate surgical reconstruction of all diseases and injuries affecting the upper extremities—from below the shoulder to the fingertips ("the second brain").

Key Services & Advanced Procedures

Degenerative & Inflammatory Disorders: Tendonitis, Trigger Finger, Carpal Tunnel Syndrome, Thumb Basal (CM) Joint Arthritis, and finger deformities (Heberden’s & Bouchard’s nodes).

Complex Upper Limb Trauma: Distal radius wrist fractures, scaphoid fractures, elbow fractures/dislocations, and ligament tears.

Microsurgical Replantation & Reconstruction: Reattachment of amputated fingers/digits, microvascular nerve and vessel repair, autologous tissue transplantation, and treatment for severe post-traumatic limb complications (intractable non-union fractures, nerve paralysis, and severe soft tissue loss).

Conditions we handle

We have specialists in each field for orthopedics.
In addition to the following diseases, we specialize in various fractures, dislocations, muscle stran, etc. Spine and spinal surgery is responsible for spinal disorders such as the neck and lower back.

Whole body

Rheumatoid arthritis
Ganglion osteoporosis
Benign / malignant tumors Transdisciplinary osteochondritis

Shoulder

Scapular nerve entrapment disorder
Proximal humerus fracture
Calcific rotator cuff inflammation Rotator cuff injury / rupture
Humerus epiphyseal line injury
Upper labial labial injury (SLAP) Contracture shoulder
Biceps tendon injury / rupture
Shoulder dislocation

Rib cage

Chest exit syndrome
Brachial plexus injury Clavicle fracture Costal cartilage fracture

Upper arm

(Biceps tendon injury / rupture) (Proximal humerus fracture)

Elbow

Lateral epicondylitis of the humerus
Medial elbow collateral ligament injury (MCL)
Elbow tube syndrome Medial epicondylitis of the humerus
Posterior elbow collision syndrome
Baseball elbow lateral collateral ligament injury
Olecranon bursitis

Hand

Keenbeck disease
Carpal tunnel syndrome
Volkmann's contracture Dukervin tendonitis
Bullet finger (spring finger)
Triangular fibrocartilage complex injury (TFCC injury) Ulnar thrust up syndrome
Fracture of distal radius
Interphalangeal joint ligament injury

Pelvis

Pelvic ring instability
Pubic osteomyelitis superior anterior iliac spine detachment fracture
(Sciatic nerve disorder) Sacroiliac joint disorder
Inferior anterior iliac spine detachment fracture

Crotch

Acetabular dysplasia
Femoral head necrosis
Perthes disease natural hip dislocation
Slipped femoral head
Osteoarthritis of the femur Neck fracture
Simple hip arthritis
Groin Payne (groin pain syndrome)

Thigh

Lateral femoral cutaneous nerve strangulation syndrome Quadriceps muscle separation Hamstrings meat separation

Knee

Osteoarthritis of the knee
Posterior cruciate ligament injury (PCL)
Osgood-Schlatter disease
Patellar tendonitis (jumper knee)
Painful split patella knee meniscus injury
Medial knee collateral ligament injury (MCL)
Tana (synovial folds) disorder
Patella Subluxation Syndrome Anterior Cruciate Ligament Injury (ACL)
Lateral collateral ligament injury (LCL)
Pigmented nodular chorionic synovitis
Patella fracture

Shin,Calf

Thin Sprint
Gastrocnemius Rupture

Leg

Foot arch disorder
Hallux valgus
Anterior tarsal tunnel syndrome
Tarsal sinus syndrome
Osteoarthritis
Calcaneus epiphysis (Saber's disease) Achilles peritenitis
Subtalar joint instability
Plantar fasciitis
Bisecting ligament injury
Lisfranc ligament injury External tibia disorder
Calcaneus fracture
Ankle sprain
Peroneal tendon / dislocation
Painful triangular bone

Number of cases

Total number of outpatients per year 4,382people
Number of hospitalization per year 916people
Average length of hospital stay 19.0 days
(FY2017)

Operation results

Operation results : 772

Inpatient Surgical Operation : 573
Outpatient Surgical Operation : 83
Emergency Operation : 116
operation for fractures : 302 spinal disorders : 72
open fracture : 49
multiple fracture : 18
upper-extremity fracture 68
lower-extremity fracture 233
(femoral neck fracture) 134
spine fracture 6
pelvic fracture 9 peripheral nerve disorders : 41
operation for soft tissue injury : 62 carpal tunnel syndrome 34
tenorrhaphy 16 cubital tunnel syndrome 7
angiorrhapy 1
nerve sutre 4
replantation 1 infectious disease : 39
major amputation 2 operation for infectious arthritis 5
minor amputation 6 operation for the osteomylitis 5
brushing and debridement 11 brushing and debridement 28
free graft 2 others 1
skin graft 14
Achilles tendon suture 13 tumor : 29
others 2 bone tumor resection 4
removal of implant : 45 soft tissue tumor resection 25
degenerative disease operation : 363 malignant soft tissue tumor wide resection 0
joint degenerative disorders : 104 biopsy 2
hip joint : 35 major amputation 13
total hip arthroplasty 33 minor amputation 5
others 2 brushing and debirdement 9
knee joint : 43 hand and finger disorders : 38
total knee arthrtiplasty 26 angiopathy (Dm, ASO) : 27
meniscectomy, meniscorrhaphy 13 snapping finger 32
syndesmoplasty 1 stenosing tenosynovitis 3
synovectomy 1 tenoplasty, tenolysis 2
mobilization 2 synovectomy 1

others : 26 others : 13
arthroplasty 13 operation for the club foot 1
arthrorisis 2 operation for the pseudarthrosis 9
arthrodesis 6 corrective osteotomy 1
mobilazation 2 other 2

List of Doctors

President of Kameda Clinic / Consultant, Department of Orthopaedic Surgery / Consultant, Upper Extremity Surgery & Trauma Reconstruction Center

Hiroshi KURODA

Subspeciality
Bone and Soft Tissue Tumors

Department name	Orthopedics
Medical School	Tokyo Medical and Dental University， School of MedicineInstitute of Science Tokyo (formerly Tokyo Medical and Dental University)
Special Qualifications	Board Certified Specialist of The Japanese Orthopaedic Association Board Certified Physician of Japan Board of Cancer Therapy Board Certified Physician of Japan Society of Clinical Oncology
Education & Career	March 1986: Graduated from Faculty of Medicine, Institute of Science Tokyo (formerly Tokyo Medical and Dental University) April 1986: Department of Orthopaedic Surgery, Institute of Science Tokyo May 1987: Cancer Research Foundation Hospital July 1987: Omiya Red Cross Hospital January 1988: Soka Municipal Hospital January 1989: Toride Kyodo General Hospital January 1990: Cancer Research Foundation Hospital April 1993: National Oji Hospital January 1994: Cancer Research Foundation Hospital January 1996: Medical Hospital, Institute of Science Tokyo April 2000: Graduate School of Medical and Dental Sciences, Institute of Science Tokyo September 2004: Saitama Cancer Center (Section Chief and Director) April 2005: Department of Orthopaedic Surgery, Faculty of Medicine, Institute of Science Tokyo (Clinical Professor until March 2009) September 2007: Cancer Institute Hospital of JFCR (Chief Physician) April 2008: Appointed as Director of Orthopaedic Surgery at this hospital June 2019: Director, Department of Orthopaedic Surgery / Consultant, Hand Surgery & Microsurgery Center June 2021: President of Kameda Clinic / Director, Department of Orthopaedic Surgery / Consultant, Hand Surgery & Microsurgery Center April 2024: President of Kameda Clinic / Director, Department of Orthopaedic Surgery / Consultant, Upper Extremity Surgery & Trauma Reconstruction Center April 2025: President of Kameda Clinic / Consultant, Department of Orthopaedic Surgery / Consultant, Upper Extremity Surgery & Trauma Reconstruction Center

President of Kameda Rehabilitation Hospital / Director, Department of Orthopaedic Surgery (In Charge of Osteochondroma)

Takashi SHIMOJI

Subspeciality
Bone and Soft Tissue Tumors

Department name	Orthopedics
Medical School	Tokyo Medical and Dental University Faculty of Medicine
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association
Education & Career	March 1990: Graduated from Faculty of Medicine, Institute of Science Tokyo (formerly Tokyo Medical and Dental University) April 1990: Department of Orthopaedic Surgery, Medical Hospital, Institute of Science Tokyo January 1991: Department of Anesthesiology, Toride Kyodo General Hospital July 1991: Department of Orthopaedic Surgery, Medical Hospital, Institute of Science Tokyo January 1992: Department of Orthopaedic Surgery, Tsuchiura Kyodo General Hospital April 1993: Department of Orthopaedic Surgery, Cancer Research Foundation Hospital January 1994: Department of Orthopaedic Surgery, Soka Municipal Hospital January 1996: Department of Orthopaedic Surgery, Cancer Research Foundation Hospital April 2003: Project Leader, Molecular Target Exploration, Genome Center, Cancer Research Foundation (Concurrently served in Department of Orthopaedic Surgery from 2014) April 2015: Department of Orthopaedic Surgery, Saitama Cancer Center April 2018: Appointed as Director of Orthopaedic Surgery (In Charge of Osteochondroma) at this hospital / Seconded as Director of Orthopaedic Surgery at Awa Regional Medical Center April 2022: Director, Department of Orthopaedic Surgery (In Charge of Osteochondroma) at this hospital June 2024: President of Kameda Rehabilitation Hospital / Director, Department of Orthopaedic Surgery (In Charge of Osteochondroma)

Chief of Orthopedics

Shinichi SASAKI

Subspeciality
Spine surgery

Department name	Orthopedics
Medical School	Tokyo Medical and Dental University， School of Medicine
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association Certified Spine and Spinal Cord Board Surgeon by the Japanese Orthopaedic Association Certified Sports Doctor by the Japanese Orthopaedic Association Certified Spine Endoscopic Surgical Skill Instructor by the Japanese Orthopaedic Association (Class II, Posterior Procedure) Board Certified Spine and Spinal Cord Surgeon/Instructor by the Japanese Society for Spine Surgery and Related Research Certified Specialized Surgeon for Endoscopic Surgery (Orthopaedic Surgery) by the Japan Society for Endoscopic Surgery Certified Occupational Physician by the Japan Medical Association
Education & Career	1995.Mar. Tokyo Medical and Dental University， Medical School 1995.Apr. Residency in Tokyo Medical and Dental University， Postgraduate School (PhD) 2002.Dec.Orthopedics Department， Japan Organization of Occupational Health and Safety， Spinal Injuries Center 2004.Apr. Orthopedics Department， National Printing Bureau， Tokyo hospital 2005.Apr. Orthopedics Department， Tokyo Medical and Dental University Hospital 2006.Jun. Orthopedics Department， Kudanzaka Hospital 2008.Apr. Orthopedics Department， Saiseikai Kawaguchi Gneral Hospital 2009.Apr. Chief of Orthopedics Department， Suwa central Hospital 2011.Apr. Chief of Orthopedics Department， Yokohama City Minato Redcross Hospital 2016.Apr. Chief of Orthopedics Department， Saiseikai Kawaguchi General Hospital 2017.Mar. Chief of Orthopedics Department， Nerima General Hospital 2019.Apr. Chief of Orthopedics Department， Kameda General Hospital 2025.Apr. Appointed as Chief Director, Department of Orthopaedic Surgery

Chief of Orthopedics 　(Out-of-hospital Secondment)

Shinichi SOTOME

Subspeciality
Orthopedics
Biomaterial

Department name	Orthopedics
Medical School	Tokyo Medical and Dental University Faculty of Medicine
Education & Career	1995 Mar. Graduated from Tokyo Medical and Dental University Faculty of Medicine 1995 Apr. Tokyo Medical And Dental University， Medical Hospital 1996 Jan. Anesthesiology， Japanese Red Cross Saitama Hospital 1996 Jul. Orthopedics，The Fraternity Memorial Hospital 1997 Apr. Orthopedics，Nitobe Memorial Nakano General Hospital 1998 Apr. Orthopedics，Japanese Red Cross Hadano Hospital 2003 Apr. Japan Science and Technology Agency， CREST Researcher 2004 Apr. National Institute for Materials Science，Fellowship Researcher 2005 Apr. Research Associate， Tokyo Medical and Dental University Faculty of Medicine Human Gene Sciences Center 2007 Apr. Medical Fellow of Orthopedics，Tokyo Medical and Dental University Faculty of Medicine 2007 Aug. Associate Professor of Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences 2019 Apr. Chif of Orthopedics， Kameda Medical Center Dispatched to Awa Community Medical Center 2022 Apr. Director, Department of Orthopaedic Surgery

Chief of Orthopedics Department

Yasuo KANAMORI

Subspeciality
Spine Surgery

Department name	Orthopedics
Medical School	Gifu University School of Medicine
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association Certified Musculoskeletal Rehabilitation Doctor by the Japanese Orthopaedic Association Certified Sports Doctor by the Japanese Orthopaedic Association Certified Spine and Spinal Cord Board Surgeon by the Japanese Orthopaedic Association Completed the Instructor Training Course by the Japanese Orthopaedic Association Board Certified Spine and Spinal Cord Surgical Instructor by the Japanese Society for Spine Surgery and Related Research
Education & Career	1999 Mar. Graduated from Gifu University School of Medicine 1999 Apr. Residency in Gifu University Hospital 2000 Jul. Orthopedics Department， Gifu Prefectural Gero Hospital 2001 Jan. Orthopedics Department， Hikone CIty Hospital 2004 Apr. Orthopedics Department， Gifu University Hospital 2006 Apr. Spine Side Bay Disease Surgery， Chigasaki Tokushukai Hospital 2008 Apr. Orthopedics Department， Teikyo University Mizonokuchi Hospital 2016 Apr. Chief of Orthopedics Department， Kameda Medical Center

Director, Department of Orthopaedic Surgery

kosuke KUBO

Subspeciality
General Joint Surgery
Artificial Joint Replacement Surgery

Department name	Orthopedics
Medical School	Tokyo Medical University
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association Clinical Training Instructor Certified by the Ministry of Health, Labour and Welfare Certified Pediatric Orthopaedic Surgeon by the Japanese Pediatric Orthopaedic Association Certified Specialist by the Japanese Society for Artificial Joints Completed Chiba Palliative Care Training Course
Education & Career	March 1999: Graduated from Faculty of Medicine, Tokyo Medical University April 1999: Joined the Department of Orthopaedic Surgery, Tokyo Medical University April 2003: Department of Orthopaedic Surgery, Tokyo Medical University April 2004: Second Department of Pathology, Tokyo Medical University April 2006: Department of Orthopaedic Surgery, Toda Chuo General Hospital January 2008: Research Fellow, Peterson Tribology Laboratory, Department of Orthopaedic Surgery, Loma Linda University (USA) August 2009: Department of Orthopaedic Surgery, Tokyo Medical University April 2012: Director, Department of Orthopaedic Surgery, Toda Chuo General Hospital April 2015: Tokyo Medical University Hachioji Medical Center April 2017: Deputy Director, Department of Orthopaedic Surgery at this hospital April 2018: Hip Joint Center, Sassa General Hospital April 2020: Appointed as Director of Orthopaedic Surgery (In Charge of Knee Joint Surgery) at this hospital

Chif of Orthopedics / Chif of Limb Trauma Center

Takashi KAMEOKA

Subspeciality
Trauma (fracture)

Department name	Orthopedics
Medical School	Tokyo Medical University School of Medicine
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association
Education & Career	2003 Mar. Graduated from Tokyo Medical University School of Medicine 2001 Apr. Tokyo Medical University Hachioji Medical Center 2004 Oct. Orthopedics， Tokyo Medical University 2005 Jul. Orthopedics， tamakyuryo Hospital 2007 Apr. Orthopedics， Tokyo Medical University 2008 Jul. Orthopedics， Tokyo Metropolitan Ohtsuka Hospital 2010 Oct. Orthopedics， Kameda Medical Center 2011 Apr. Assistant Chief of Orthopedics， Kameda Medical Center 2016 Apr. Vice Chief of Orthopedics， Kameda Medical Center 2020 Jan. Chif of Orthopedics / Chif of Limb Trauma Center， Kameda Medical Center

Chief of Division of Hand Surgery

Hayato KUNO

Subspeciality
Hand Surgery, Microsurgery, and Reconstruction of Extremity Function

Department name	Orthopedics
Medical School	Hyogo College Of Medicine
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association Board Certified Hand Surgeon / Instructor by the Japanese Society for Surgery of the Hand
Education & Career	March 2006: Graduated from Hyogo Medical University April 2006: Initial Residency at Takatsuki Red Cross Hospital April 2008: Department of Orthopaedic Surgery, Kameda General Hospital January 2011: Hand Surgery Fellowship at Saitama Hand Surgery Institute April 2012: Takatsuki Orthopaedic Hospital / Tokyo Institute of Hand Surgery and Sports Medicine April 2014: Staff Physician at Saitama Hand Surgery Institute 2015: Hand and Microsurgery Fellow at Ganga Hospital (Coimbatore, India) April 2016: Deputy Director, Department of Orthopaedic Surgery at this hospital 2018: AO Trauma Fellow at E-DA Hospital (Kaohsiung, Taiwan) June 2019: Deputy Director, Department of Orthopaedic Surgery / Director, Hand Surgery & Microsurgery Center April 2024: Deputy Director, Department of Orthopaedic Surgery / Director, Upper Extremity Surgery & Trauma Reconstruction Center April 2026: Director, Department of Orthopaedic Surgery / Director, Upper Extremity Surgery & Trauma Reconstruction Center

Senior Physician, Department of Orthopaedic Surgery

Kazuyuki NAKAZATO

Subspeciality
Orthopaedic Surgery

Department name	Orthopedics
Medical School	University of the Ryukyus
Special Qualifications	Board Certified Orthopaedic Surgeon by the Japanese Orthopaedic Association
Education & Career	March 2009: Graduated from Faculty of Medicine, University of the Ryukyus April 2009: Initial Residency at Tokyo Kita Social Insurance Hospital April 2011: Advanced Resident, Department of Orthopaedic Surgery, Tokyo Kita Social Insurance Hospital April 2012: Appointed as Advanced Resident of Orthopaedic Surgery at this hospital April 2014: Advanced Resident of Orthopaedic Surgery, Seconded to Awa Regional Medical Center April 2015: Staff Physician, Department of Orthopaedic Surgery (Returned from Secondment at Awa Regional Medical Center) February 2019: Appointed as Senior Physician, Department of Orthopaedic Surgery

Staff Physician, Department of Orthopaedic Surgery

Yuta TANUMA

Subspeciality
Trauma, Spine and Pelvis

Department name	Orthopedics
Medical School	Nippon Medical School
Special Qualifications	Completed Palliative Care Training Course
Education & Career	March 2016: Graduated from Nippon Medical School April 2016: Tokyo Metropolitan Bokutoh Hospital April 2018: Department of Orthopaedic Surgery, Nippon Medical School July 2020: Advanced Critical Care and Emergency Center, Saitama Medical University Medical Center April 2024: Appointed as Staff Physician, Department of Orthopaedic Surgery at this hospital

Staff Physician, Department of Orthopaedic Surgery