Lower extremity division of orthopaedic surgery Keio University consists of 3 subclinical services, Hip, Knee, and Foot and Ankle surgery. Two experienced instructors are working in each service, and provide high quality clinical service. We have more than 600 surgical cases each year, and had 709 special surgeries in 2014. Those surgeries involve minimum invasive technique and surgical navigation, which enable us to achieve less-invasive and precise surgry.
Yasuo Niki, MD
| Associate Professor | |
|---|---|
| Graduate Year | 1993 |
| Specialty | Knee Surgery, Sports related injury of the Knee, Rheumatoid Arthritis of the Knee, Biomaterials, Basic research of Arthritis |
Arihiko Kanaji, MD
| Assistant Professor | |
|---|---|
| Graduate Year | 1994 |
| Specialty | Hip surgery, Pediatric orthopaedics, Hip arthroscopy |
| Study in Abroad | Rush University (USA) |
Toru Nishiwaki, MD
| Assistant Professor | |
|---|---|
| Graduate Year | 1998 |
| Specialty | Hip surgery, Pediatric orthopaedics, Minimum invasive surgery for the Hip |
| Study in Abroad | SPORTSMED-SA (Australia) University of Ottawa (Canada) |
Kengo Harato, MD
| Assistant Professor | |
|---|---|
| Graduate Year | 1999 |
| Specialty | Sports related injury of the Knee, Total knee arthroplasty, Gait analysis, Biomechanics, Rheumatoid Arthritis of the Knee |
| Study in Abroad | West Ontario University (Canada) |
Shu Kobayashi, MD
| Instructor | |
|---|---|
| Graduate Year | 2001 |
| Specialty | Knee Surgery, Sports related injury of the Knee, Total knee arthroplasty |
Akihito Oya
| Instructor | |
|---|---|
| Graduate Year | 2006 |
| Specialty | Hip Surgery, Arthroplasty and trauma of lower extremity |
Minimum Invasive Total Knee and Total Hip Arthroplasty (MIS-TKA, MIS-THA)
Using minimum incision to the skin, it is possible to reduce damage to the muscle and decrease postoperative pain level. MIS surgery can provide early recovery from the surgery.
Anatomically aligned Total Knee Arthroplasty
We have modified our surgical technique in total knee arthroplasty to improve patient satisfaction. Historically, bone cut of the tibia was performed to obtain perpendicular joint line to the weight bearing axis, which seems to be an overcorrection of the lower limb. We perform anatomically aligned TKA, in which the tibia was cut in 3 degrees varus to the weight bearing axis, that is expected to have good satisfaction and ‘natural’ alignment of each patient.
Arthroscopic reconstruction of the anterior cruciate ligament (ACL)
We perform anatomical reconstruction of the ACL to acquire knee joint stability. We also have basic research about biological remodeling of the ACL and imaging of the reconstructed ligament using MRI.
Hip Arthroscopy
We perform hip arthroscopic surgery for femoroaccetabular impingement and pediatric disorder of the hip joint. Using this technique, the patients can achieve early recovery from the surgery compared to conventional hip surgery.
Kanagawa H, Niki Y, Kobayashi T, Sato Y, Katsuyama E, Fujie A, Hao W, Miyamoto K, Tando T, Watanabe R, Morita M, Morioka H, Matsumoto M, Toyama Y, Miyamoto T. Mycobacterium tuberculosis promotes arthritis development through Toll-like receptor 2. Journal of Bone and Mineral Metabolism (JBMM) 33: 135-141, 2015
Katsuyama E, Miyamoto H, Kobayashi T, Sato Y, Hao W, Kanagawa H, Fujie A, Tando T, Watanabe R, Morita M, Miyamoto K, Niki Y, Morioka H, Matsumoto M, Toyama Y, Miyamoto T. Interleukin-1 receptor-associated kinase-4 (IRAK4) promotes inflammatory osteolysis by activating osteoclasts and inhibiting formation of foreign body giant cells. Journal of Biological Chemistry 290: 716-726, 2015
Hakozaki A, Niki Y, Enomoto H, Toyama Y, Suda Y. Clinical significance of T2*-weighted gradient-echo MRI to monitor graft maturation over one year after anatomic double-bundle anterior cruciate ligament reconstruction: a comparative study with proton density-weighted MRI. Knee 22: 4-10, 2015
Kanagawa H, Masuyama R, Morita M, Sato Y, Niki Y, Kobayashi T, Katsuyama E, Fujie A, Hao W, Tando T, Watanabe R, Miyamoto K, Morioka H, Matsumoto M, Toyama Y, Saya H, Miyamoto T. Methotrexate inhibits osteoclastogenesis by decreasing RANKL-induced calcium influx into osteoclast progenitors. Journal of Bone and Mineral Metabolism (JBMM), 2015
Niki Y, Harato K, Nagai K, Suda Y, Nakamura M, Matsumoto M. Effects of Reduction Osteotomy on Gap Balancing During Total Knee Arthroplasty for Severe Varus Deformity. Journal of Arthroplasty, 2015
Niki Y, Nagai K, Harato K, Suda Y, Nakamura M, Morio M. Effects of femoral bone tunnel characteristics on graft-bending angle in double-bundle anterior cruciate ligament reconstruction: a comparison of the outside-in and transportal techniques. Knee Surgery, Sports Traumatology, Arthroscopy (KSSTA), 2015
Niki Y, Takeda Y, Harato K, Suda Y. Factors affecting the achievement of Japanese-style deep knee flexion after total knee arthroplasty using posterior-stabilized prosthesis with high-flex knee design. Journal of Orthopaedic Science (JOS), 2015
Harato K, Maeno S, Tanikawa H, Kaneda K, Morishige Y, Nomoto S, Niki Y. What are the important manoeuvres for beginners to minimize surgical time in primary total knee arthroplasty? Knee Surgery, Sports Traumatology, Arthroscopy (KSSTA), 2015
Harato K, Niki Y, Nagashima M, Masumoto K, Otani T, Toyama Y, Suda Y. Arthroscopic Visualization of the Abnormal Movement of Discoid Lateral Meniscus with Snapping Phenomenon. Arthroscopy Techniques 4: 235-238, 2015
Harato K, Yoshida H. Pseudogout at the knee joint will frequently occur after hip fracture and lead to the knee pain in the early postoperative period. Journal of Orthopaedic Surgery and Research 10: 4, 2015
Waseda A, Suda Y, Inokuchi S, Nishiwaki Y, Toyama Y. Standard growth of the foot arch in childhood and adolescence-derived from the measurement results of 10,155 children. Foot and ankle surgery 20: 208-214, 2014
Kanaji A, Orhue V, Caicedo MS, Virdi AS, Sumner DR, Hallab NJ, Jahr H, Toyama Y, Sena K. Cytotoxic effects of metal ions on osteocytes in vitro. Journal of Orthopaedic Surgery and Research, 9: 91, 2014.
Izumida H, Kanaji A, Nishiwaki T, Shimizu H, Fujie A, Tando T, Toyama Y, Suda Y. Acetabular labral tear complicating idiopathic osteonecrosis of the femoral head treated by labral repair with hip arthroscopy: A case report. Journal of Medical Case Reports. 18; 8: 372, 2014.
Harato K, Ozaki M, Sakurai A, Kudo Y, Otani T. Stress fracture of the first metatarsal after total knee arthroplasty: Two case reports using gait analysis. : Knee. 2014 Jan; 21: 328-331. (1.702)
Kitta Y, Niki Y, Udagawa K, Enomoto H, Toyama Y, Suda Y. Severe valgus deformity of the knee with permanent patellar dislocation associated with melorheostosis: a case report and review of the literature. Knee 21: 589-593, 2014
Harato K, Niki Y, Nagashima M, Masumoto K, Otani T, Toyama Y, Suda Y. Arthroscopic Visualization of the Abnormal Movement of Discoid Lateral Meniscus with Snapping Phenomenon. Arthroscopy Tech 2015. (3.191)
Harato K, Yoshida H. Pseudogout at the knee joint will frequently occur after hip fracture and lead to the knee pain in the early postoperative period. J Orthop Surg Res. 2015 14; 10(1): 4(1.580)
Zylberberg AD, Nishiwaki T, Kim PR, Beaulé PE. Clinical results of the conserve plus metal on metal hip resurfacing: an independent series. J Arthroplasty. ; 30(1): 8-73, 2015. (2.11)
Uchikawa S, Yoda M, Tohmonda T, Kanaji A, Matsumoto M, Toyama Y, Horiuchi K. ADAM17 regulates IL-1 signaling by selectively releasing IL-1 receptor type 2 from the cell surface. Cytokine, 71(2): 238-245, 2014. (2.87)
Yamagichi K, Yanagimoto S, Kageyama T, Fujita Y, Funayama A, Kanaji A, Susa M, Toyama Y. Experimental assessment of novel intramedullary nail for callus distraction by the segmental bone transport method. J Orthop Sci. 19(2): 323-331, 2014. (0.96)
Udagawa K, Niki Y, Enomoto H, Toyama Y, Suda Y. Factors influencing graft impingement on the wall of the intercondylar notch after anatomic double-bundle anterior cruciate ligament reconstruction. Am J Sports Med. 2014 Sep; 42(9): 2219-25. (4.699)
Katsuyama E, Miyamoto H, Kobayashi T, Sato Y, Hao W, Kanagawa H, Fujie A, Tando T, Watanabe R, Morita M, Miyamoto K, Niki Y, Morioka H, Matsumoto M, Toyama Y, Miyamoto T. Interleukin-1 Receptor-associated Kinase-4(IRAK4) Promotes Inflammatory Osteolysis by Activating Osteoclasts and Inhibiting Formation of Foreign Body Giant Cells.: J Biol Chem. 2015 Jan 9; 290(2): 716-26. (4.6)
Tanikawa H, Matsumoto H, Harato K, Kiriyama Y, Suda Y, Toyama Y, Nagura T. Female recreational athletes demonstrate different knee biomechanics from male counterparts during jumping rope and turning activities. J Orthop Sci. 2014 Jan; 19(1): 104-11. (1.008)
Waseda A, Suda Y, Inokuchi S, Nishiwaki Y, Toyama Y. Standard growth of the foot arch in childhood and adolescence--derived from the measurement results of 10,155 children. Foot Ankle Surg. 2014 Sep; 20(3): 208-14. (1.015)
Harato K, Maeno S, Tanikawa H, Kaneda K, Morishige Y, Nomoto S, Niki Y What are the important maneuvers for beginners to minimize surgical time in primary total knee arthroplasty? Knee Surgery, Sports Traumatology, Arthroscopy 2015 in press. (2.837)