Centers & Services

Top > Centers & Services > Clinical Services > Orthopaedic Surgery and Spinal Surgery

Orthopaedic Surgery and Spinal Surgery

The Department of Orthopaedic Surgery and Spinal Surgery treats disease and trauma to the motor organs. The Department of Orthopaedic Surgery of the University of Tokyo Hospital, the first department specializing in orthopedic surgery in Japan, has been playing a leading role in orthopedic surgery in the nation.

Medical services

Approximately 25 full-time specialists certified by the Japanese Orthopaedic Association provide cutting-edge treatment in their specialized fields. The average number of surgeries performed annually is approximately 1,300 and is increasing every year.

Treatment policy and specialties

A treatment strategy for each patient is determined in a comprehensive manner after extensive discussion by a group of specialists in the pertinent field, with the patient’s wishes taken into consideration. We specialize in spinal surgeries (atlantoaxial fixation, deformity correction, etc.) and artificial joint replacement using a navigation system, microsurgery, arthroscopic surgery, spinal endoscopy, and radical resection and chemotherapy for malignant osteochondroma.

Specialties/Target diseases


Cervical and thoracic spine diseases, lumbar spine canal stenosis, disc hernia, scoliosis


Rheumatoid arthritis, inflammatory diseases

Knee and sports

Osteoarthritis, Anterior cruciate ligament injury, Meniscal injury, Achilles tendon rupture, sports injuries


Osteoarthritis, acetabular dysplasia, Femoroacetabular impingement


Joint osteoarthritis, Dupuytren’s contracture, tendon injury, carpal tunnel syndrome


Malignant and benign musculoskeletal tumors


High energy trauma


Hallux valgus, ankle osteoarthritis, Posterior tibial tendon dysfunction, Flatfoot


Developmental dysplasia of the hip, Clubfoot, Torticollis

Leg Lengthening
Peripheral nerve

Brachial plexus injury, Peripheral nerve injury


Rotator cuff injury, Recurrent dislocation of the shoulder

Website of the Department of Orthopaedic Surgery and Spinal Surgery of the University of Tokyo Hospital :

Sakae Tanaka

Sakae Tanaka


Orthopaedic Surgery and Spinal Surgery, Medical Support Center


M.D. , Ph.D.


Joint surgery, rheumatoid arthritis, osteoporosis

Research Interests

Bone and cartilage biology, arthritis


Japanese, English

See More

Representative orthopedic surgeries performed in this department

Name of operation/treatment Number
Spinal surgery: 252
Cervical spine disease 88
Thoracic vertebra disease 19
Lumbar vertebrae disease 86
Scolioses and related diseases 30
Minimally invasive surgery  such as endoscopic surgery (may partially overlap with the above) 51
Knee surgery: 252
Artificial knee joint (TKA + UKA) 106
Ligament reconstruction 40
Hand surgery: 251
Thumb Carpometacarpal Arthroplasty 14
Surgery for Dupuytren's contracture 7
Surgery for distal radius fracture 27
Tenorrhaphy and tendolysis 5
Tumorectomy 5
Surgery for carpal tunnel syndrome 23
Pediatric surgery 22
Hip surgery: 132
Artificial hip joint 119
Artificial hip joint (hip replacement) 7
Rotational acetabular osteotomy 7
Tumor surgery: 90
Extended resection of malignant bone and soft tissue tumors 28
Resection of benign bone and soft tissue tumors 40
Others (such as incisional biopsy) 14
Rheumatoid arthritis surgery: 62
Artificial hip joint 8
Artificial knee joint 12
Artificial elbow joint 11
Forefoot arthroplasty 13
Foot and Ankle Surgery 48
Trauma: 183
Pediatric orthopedics: 17


Areas of expertise, treatment and examination methods

  1. Cervical myelopathy or cervical spondylotic myelopathy
  2. Posterior longitudinal ligament ossification
  3. Yellow ligament ossification
  4. Spinal canal stenosis
  5. Disc herniation
  6. Scoliosis
  7. Hip osteoarthritis
  8. Knee osteoarthritis
  9. Rheumatoid arthritis
  10. Femoral head necrosis
  11. Osteoporosis
  12. Knee ligament injury
  13. Bone and soft tissue tumors
  14. Limb deformities
  15. Refractory fractures
  16. General trauma
  17. Thumb Carpometacarpal Arthroplasty
  18. Flexor tendon injury
  19. Hallux valgus
Treatment methods
  1. Arch plasty for cervical and lumbar vertebrae
  2. Anterior spinal decompression
  3. Herniated disc resection
  4. Corrective spinal osteotomy
  5. Total joint replacement (hip, knee, and elbow)
  6. Rotational acetabular osteotomy
  7. High tibial osteotomy
  8. Rheumatoid arthritis surgery (wrist and forefoot arthroplasties)
  9. Knee-arthroscopic ligament reconstruction
  10. Extended resection of malignant bone and soft tissue tumors
  11. Resection of benign bone and soft tissue tumors
  12. Bone lengthening
  13. Surgery for pseudarthrosis
  14. Invasive internal fixation
  15. Tenorrhaphy
  16. Thumb Carpometacarpal Arthroplasty
  17. Surgical repair of hallux valgus
Examination methods
  1. Imaging (such as plain X-rays, CT, NRI, and 3-D imaging)
  2. Bone density measurement
  3. Electromyography
  4. Nerve conduction velocity measurement
  5. Radiculography
  6. Myelography
  7. Bone scintigraphy/PET
  8. Needle biopsy
  9. Knee arthroscopy

page top