Fellowship Program Information

Affiliation (Center Type): Knee Arthroscopy, Osteotomy, Arthroplasty (Teaching, Academic, University)
Fellowship Training Session or Other Educational Opportunity Length: 3 months
Can the Center customize educational opportunities for participants?: No
Fellows Accepted Per Year: 6
Faculty Participating in Fellowship Education: Hideyuki Koga, MD, PhD, Knee Arthroscopy and Osteotomy Tomomasa Nakamura, MD, PhD, Knee Arthroscopy Yusuke Nakagawa, MD, PhD, Knee Arthroplasty Nobutake Ozeki, MD, PhD, Knee Arthroscopy and Osteotomy Mai Katakura, MD, PhD, Ankle Arthroscopy Masaki Amemiya, MD, PhD, Knee Osteotomy
Recent activity of Teaching Center:

Financial Support and Expenses

Types of Financial Support Available: Private
Other support that the Teaching Center can provide: Direct Application
Estimate of Living Expenses (Housing and other major costs):

Anticipated Fellowship Participation in Surgical Cases

Area(s) of Specialty: Ankle Arthroscopy Knee Arthroplasty Knee Arthroscopy
Role of the fellow with respect to Clinical, Surgical, Research, and other opportunities:
Types of Educational Opportunities:
Research projects, research facilities and resources, cadaver labs, publication opportunities, integration of the patient and public involvement, and the role of the fellow: In press Yoshihara A, Mouton C, Siboni R, Nakamura T, Sekiya I, Koga H, Seil R, Nakagawa Y. Combined use of cleft and truncated triangle signs helps improve the preoperative MRI diagnosis of lateral meniscus posterior root tears in patients with ACL injuries. Knee Surg Sports Traumatol Arthrosc. 2025. Hasegawa S, Koga H, Nakagawa Y, Ding H, Yoshihara A, Amemiya M, Hoshino T, Katakura M, Ozeki N, Nakamura T, Katagiri H. Establishing an optimal central sensitization inventory cut-off value affecting postoperative outcomes of osteotomy around the knee. J Orthop Sci. 2024. Ozeki N, Koga H, Nakamura T, Katagiri H, Nakagawa Y, Hoshino T, Katakura M, Amemiya M, Yoshihara A, Katano H, Mizuno M, Endo K, Masumoto J, Sekiya I. Cartilage thickness in the medial compartment of the knee joint evaluated by MRI three-dimensional analysis correlates with weight-bearing line ratio and joint line convergence angle. J Orthop Sci. 2024. 2025 Yamashita R, Nozawa I, Hasegawa S, Nakagawa Y, Miyatake K, Katagiri H, Nakamura T, Koga H, Sekiya I, Yoshii T, Tsuji K. C-type natriuretic peptide suppresses VEGFa gene expression by attenuating IL6-STAT3 signal pathway in primary synovial fibroblasts from rat knee. Biochem Biophys Res Commun. 2025;749:151290. Nakagawa Y, Koga H, Sekiya I, Hasegawa S, Katagiri H, Watanabe T. Equivalent Clinical Outcomes Between Anatomical Alignment Versus Mechanical Alignment of Simultaneous Bilateral Total Knee Arthroplasty Using a Posterior-Stabilized Prosthesis During an Average Follow-Up of Five Years: A Prospective Randomized Clinical Trial. J Arthroplasty. 2025;40(1):84-91. 2024 Katano H, Ozeki N, Mizuno M, Endo K, Koga H, Masumoto J, Sekiya I. Femoral cartilage defects initiate from medial meniscus extrusion or tibial cartilage lesions and expand in knee osteoarthritis as revealed by 3D MRI analysis. Scientific reports. 2024;14(1):25937. Ohji S, Aizawa J, Hirohata K, Ohmi T, Kawasaki T, Koga H, Yagishita K. Relationship Between Single-Leg Vertical Jump and Drop Jump Performance, and Return to Sports After Primary Anterior Cruciate Ligament Reconstruction Using Hamstring Graft. Int J Sports Phys Ther. 2024;19(10):1204-1215. Yoshimura H, Nakagawa Y, Muneta T, Koga H. A CCL2/MCP-1 antagonist attenuates fibrosis of the infrapatellar fat pad in a rat model of arthritis. BMC Musculoskelet Disord. 2024;25(1):674. Yoshida R, Koga H, Nakamura T, Nakagawa Y, Katakura M, Amemiya M, Hoshino T, Yoshihara A, Hasegawa S, Tokumoto Y, Sekiya I, Ozeki N. Steep medial posterior tibial slope angle and ramp lesion are independent risk factors for an increase in quantitatively measured pivot shift in patients with ACL-deficient knees. J Exp Orthop. 2024;11(3):e70011. Ozeki N, Koga H, Nakamura T, Katagiri H, Nakagawa Y, Hoshino T, Katakura M, Amemiya M, Yoshihara A, Katano H, Mizuno M, Endo K, Masumoto J, Sekiya I. The association of the medial meniscus covering ratio with knee cartilage thickness at 15 medial compartment subregions as found by three-dimensional analysis using MRI. J Exp Orthop. 2024;11(3):e70005. Araya N, Koga H, Nakagawa Y, Shioda M, Ozeki N, Kohno Y, Nakamura T, Sekiya I, Katagiri H. Risk factors for delayed bone union in opening wedge high tibial osteotomy. Jt Dis Relat Surg. 2024;35(3):546-553. ?Katagiri H, Nakagawa Y, Ohara T, Nakamura T, Yoshihara A, Hayashi M, Yoshimura H, Nagase T, Sekiya I, Koga H. Serial Assessment of Factors Associated With Patient-Reported Outcomes up to 2 Years After ACL Reconstruction Using Autologous Hamstring Tendon: Results From the TMDU MAKS Study. Orthopaedic journal of sports medicine. 2024;12(6):23259671241254105. Hasegawa S, Yamashita R, Nakagawa Y, Miyatake K, Katagiri H, Nakamura T, Koga H, Sekiya I, Yoshii T, Rosen V, Tsuji K. A novel methodology utilizing microchip implants to monitor individual activity and body temperature for assessing knee pain in group-housed rats. Scientific reports. 2024;14(1):16909. ?Nakamura T, Koga H. Review of the Development of Meniscus Centralization. Curr Rev Musculoskelet Med. 2024;17(8):303-312. Matsuta S, Endo K, Ozeki N, Nakagawa Y, Koga H, Sekiya I. Synovial mesenchymal stem cells secrete more lubricin than adipose mesenchymal stem cells after injection into rat osteoarthritis knees. Biochem Biophys Res Commun. 2024;729:150354. Katagiri H, Forster BB, Koga H, An JS, Adachi T, Derman W. Noteworthy performance of muscle injured para-athletes: A study of MRI-detected muscle injuries at the Tokyo 2020 Summer Paralympic Games. Am J Phys Med Rehabil. 2024;103(7):652-658. Yoshida R, Koga H, Matsuda J, Nakamura T, Miyatake K, Katagiri H, Katakura M, Yoshihara A, Seki R, Katsumata T, Mizuno M, Watanabe K, Sekiya I, Tsuji K, Nakagawa Y. Presoaking Grafts in Vancomycin Does Not Impair Graft-Bone Healing in a Rat Anterior Cruciate Ligament Reconstruction Model. Am J Sports Med. 2024;52(7):1784-1793. Fuchioka Y, Endo K, Sakamaki Y, Tanimoto T, Ozeki N, Nakagawa Y, Koga H, Tomita M, Sekiya I. Scanning electron microscopy analysis of synovial and adipose mesenchymal stem cells adhering to cartilage. Regen Ther. 2024;27:488-495. Tagawa Y, Saito T, Iwai H, Sato M, Noda S, Yamamoto A, Ota M, Endo K, Koga H, Takahara Y, Sugimoto K, Sekiya I, Fujio K, Kawakami E, Mizoguchi F, Yasuda S. ARID5B is a negative modulator of IL-6 production in rheumatoid arthritis synovial fibroblasts. Immunol Med. 2024:1-10. Ohmi T, Katagiri H, Amemiya M, Ikematsu K, Miyazaki M, Koga H, Yagishita K. Gait analysis of patients with knee osteoarthiritis who can run versus cannot run. Gait Posture. 2024;112:67-72. Ogasawara I, Ohta K, Revankar GS, Konda S, Shimokochi Y, Koga H, Nakata K. The deterministic condition for the ground reaction force acting point on the combined knee valgus and tibial internal rotation moments in early phase of cutting maneuvers in female athletes. J Sport Health Sci. 2024;13(3):376-386. An JS, Jacquet C, Loddo G, Mabrouk A, Koga H, Argenson JN, Ollivier M. Deformity in valgus knee malalignment is not only in the femur but also in tibia or both, based on demographic and morphological analysis before and after knee osteotomies. Knee Surg Sports Traumatol Arthrosc. 2024;32(5):1087-1095. Ozeki N, Koga H, Nakamura T, Nakagawa Y, Hoshino T, Amemiya M, Sekiya I. Real-Time Virtual Sonography-Guided Ossicle Removal in Unresolved Osgood-Schlatter Disease. Arthrosc Tech. 2024;13(4):102897. Watanabe N, Ogawa T, Miyatake K, Takada R, Jinno T, Koga H, Yoshii T. Increased bone resorption that outpaces increased bone formation: An important pathology of rapidly destructive coxarthrosis. J Orthop Res. 2024;42(5):1066-1073. Tachibana T, Koga H, Katagiri H, Ogawa T, Takada R, Miyatake K, Jinno T. Analysis of survivorship following periacetabular osteotomy for hip dysplasia based on three-dimensional acetabular coverage. J Hip Preserv Surg. 2024;11(1):30-37. Aizawa JY, Hirohata K, Ohji S, Mitomo S, Ohmi T, Koga H, Yagishita K. Anterior Cruciate Ligament-Return to Sport after Injury (ACL-RSI) subcategories are affected by subjective running ability and medial single-leg hop distance in postreconstruction patients at 6 months. J Exp Orthop. 2024;11(1):e12004. Mizuno M, Maeda Y, Sanami S, Matsuzaki T, Yoshikawa HY, Ozeki N, Koga H, Sekiya I. Noninvasive total counting of cultured cells using a home-use scanner with a pattern sheet. iScience. 2024;27(3):109170. Yang Y, Koga H, Nakagawa Y, Nakamura T, Katagiri H, Takada R, Katakura M, Tsuji K, Sekiya I, Miyatake K. Characteristics of the synovial microenvironment and synovial mesenchymal stem cells with hip osteoarthritis of different bone morphologies. Arthritis Res Ther. 2024;26(1):17. 2023 ?Ozeki N, Nakamura T, Nakagawa Y, Sekiya I, Koga H. Meniscus repair and centralization: Preserving meniscus function. Journal of Joint Surgery and Research. 2023;1(1):46-55. Sekiya I, Katano H, Guermazi A, Miura Y, Okanouchi N, Tomita M, Masumoto J, Kitazume Y, Koga H, Ozeki N. Association of AI-determined Kellgren-Lawrence grade with medial meniscus extrusion and cartilage thickness by AI-based 3D MRI analysis in early knee osteoarthritis. Scientific reports. 2023;13(1):20093. Ding H, Koga H, Katagiri H, Hasegawa S, Anzai T, Katakura M, Yoshihara A, Amemiya M, Hoshino T, Ozeki N, Nakamura T, Nakagawa Y. Low central sensitisation inventory score is associated with better post-operative outcomes of osteotomy around the knee. Knee Surg Sports Traumatol Arthrosc. 2023;31(12):5896-5904. Ling Z, Aini H, Kajikawa S, Shirakawa J, Tsuji K, Asou Y, Koga H, Sekiya I, Nifuji A, Noda M, Ezura Y. Osteolytic Bone Loss and Skeletal Deformities in a Mouse Model for Early-Onset Paget's Disease of Bone with PFN1 Mutation Are Treatable by Alendronate. Pharmaceuticals (Basel). 2023;16(10). Katano H, Ozeki N, Mizuno M, Endo K, Okanouchi N, Fujita J, Masumoto J, Koga H, Sekiya I. Morphological analysis of three-dimensional MR images of patellofemoral joints in asymptomatic subjects. Scientific reports. 2023;13(1):16750. Watanabe N, Ogawa T, Takada R, Amano Y, Jinno T, Koga H, Yoshii T, Okawa A, Miyatake K. Association of osteoporosis and high serum homocysteine levels with intraoperative periprosthetic fracture during total hip arthroplasty: a propensity-score matching analysis. Archives of orthopaedic and trauma surgery. 2023;143(12):7219-7227. ?Amano Y, Ozeki N, Matsuda J, Nakamura T, Nakagawa Y, Sekiya I, Koga H. Augmentation of a non-anatomical repair of a medial meniscus posterior root tear with centralization using three knotless anchors may be associated with less meniscal extrusion and better compressive load distribution in mid-flexion compared to non-anatomical root repair alone in a porcine knee model. Arthroscopy. 2023;39(12):2487-2498.e2484. Qu Z, Koga H, Tsuji K, Tang G, Yang Y, Yoshihara A, Katakura M, Katagiri H, Miyatake K, Nakamura T, Sekiya I, Nakagawa Y. Hyaluronic acid sheet transplantation attenuates infrapatellar fat pad fibrosis and pain in a rat arthritis model. J Orthop Res. 2023;41(11):2442-2454. Nakagawa Y, Koga H, Nakamura T, Horie M, Katagiri H, Ozeki N, Ohara T, Sekiya I, Muneta T, Watanabe T. Mid-term clinical outcomes of a posterior stabilized total knee prosthesis for Japanese patients: A minimum follow-up of 5 years. J Orthop Sci. 2023;28(6):1325-1330. Isono M, Koga H, Nakagawa Y, Nakamura T, Sekiya I, Katagiri H. Inferior Healing Rate in Isolated Meniscal Repair than that in Meniscal Repair with Concomitant ACL Reconstruction Evaluated with MRI. Malays Orthop J. 2023;17(1):61-69. ?Hasegawa S, Nakagawa Y, Yoshihara A, Nakamura T, Katagiri H, Hayashi M, Yoshimura H, Nagase T, Sekiya I, Koga H. Older Age, Poor Preoperative Quadriceps Muscle Strength, and Residual Pain as Risk Factors for Poor Quadriceps Muscle Strength Recovery at 1 Year After ACL Reconstruction: A TMDU MAKS Study of 402 Patients. Orthopaedic journal of sports medicine. 2023;11(9):23259671231194593. An JS, Mabrouk A, Khakha R, Kley K, Koga H, Jacquet C, Ollivier M. Assessment of return to sport and functional outcomes following distal femoral, double level and high tibial osteotomies for active patients with symptomatic varus malalignment. Knee Surg Sports Traumatol Arthrosc. 2023;31(10):4285-4291. ?Yoshihara A, Siboni R, Nakagawa Y, Mouton C, Jacquet C, Nakamura T, Sekiya I, Seil R, Koga H. Lateral-medial asymmetry of posterior tibial slope and small lateral tibial plateau articular surface depth are morphological factors of lateral meniscus posterior root tears in ACL-injured patients. Knee Surg Sports Traumatol Arthrosc. 2023;31(9):3594-3603. Ohji S, Aizawa J, Hirohata K, Ohmi T, Mitomo S, Koga H, Yagishita K. Kinesiophobia Is Negatively Associated With Psychological Readiness to Return to Sport in Patients Awaiting Anterior Cruciate Ligament Reconstruction. Arthroscopy. 2023;39(9):2048-2055. Hasegawa S, An JS, Hino J, Amano Y, Nakagawa Y, Miyatake K, Katagiri H, Nakamura T, Sekiya I, Koga H, Tsuji K. Therapeutic effect of C-type natriuretic peptide on persistent pain in a rat knee arthritis model. J Orthop Surg (Hong Kong). 2023;31(2):10225536231181708. ?Katagiri H, Nakagawa Y, Amano Y, Shirakawa Y, Ozeki N, Nakamura T, Sekiya I, Koga H. Decision regret following opening wedge high tibial osteotomy: Older age as a risk factor. Knee. 2023;43:62-69. Ohji S, Aizawa J, Hirohata K, Ohmi T, Mitomo S, Koga H, Yagishita K. Association between landing biomechanics, knee pain, and kinesiophobia in athletes following anterior cruciate ligament reconstruction: A cross-sectional study. PM & R : the journal of injury, function, and rehabilitation. 2023;15(5):552-562. Murofushi K, Yamaguchi D, Kaneoka K, Oshikawa T, Katagiri H, Hirohata K, Furuya H, Mitomo S, Koga H, Yagishita K. The effectiveness of corrective exercises on the KOJI AWARENESS score and activity-related pain intensity. J Med Invest. 2023;70(1.2):208-212. ?Nakagawa Y, Tsuji K, Nakamura T, Katagiri H, Ozeki N, Shioda M, An JS, Yoshida R, Sekiya I, Koga H. Association of Infrapatellar Fat Pad Fibrosis at 3 Months After ACL Reconstruction With Short-term Clinical Outcomes and Inflammatory Cytokine Levels in the Synovial Fluid. Orthop J Sports Med. 2023;11(4):23259671231164122. ?Katagiri H, Nakagawa Y, Miyatake K, Ozeki N, Kohno Y, Amemiya M, Sekiya I, Koga H. Comparison of Clinical Outcomes after Revision Anterior Cruciate Ligament Reconstruction using a Bone-patellar Tendon-bone Autograft and that Using a Double-Bundle Hamstring Tendon Autograft. The journal of knee surgery. 2023;36(6):613-621. Sato K, Sato A, Okuda N, Masaaki M, Koga H. A propensity score-matched comparison between Mako robotic arm-assisted system and conventional technique in total hip arthroplasty for patients with osteoarthritis secondary to developmental dysplasia of the hip. Arch Orthop Trauma Surg. 2023;143(5):2755-2761. Ozeki N, Koga H, Nakagawa Y, Katagiri H, Katano H, Tomita M, Masumoto J, Sekiya I. Association between knee cartilage thickness determined by magnetic resonance imaging three-dimensional analysis and the International Cartilage Repair Society (ICRS) arthroscopic grade. Knee. 2023;42:90-98. Ozeki N, Mizuno M, Yanada S, Okada T, Kubota R, Kushida Y, Furuoka H, Endo K, Katano H, Nakamura K, Ohya S, Koga H, Sekiya I. Autologous Synovial Mesenchymal Stem Cell Transplantation Suppresses Inflammation Caused by Synovial Harvesting and Promotes Healing in a Micro Minipig Repaired Meniscus Model. Transplant Proc. 2023;55(2):470-480. ?Katagiri H, Nakagawa Y, Miyatake K, Ohara T, Shioda M, Sekiya I, Koga H. Short-Term Outcomes after High Tibial Osteotomy Aimed at Neutral Alignment Combined with Arthroscopic Centralization of Medial Meniscus in Osteoarthritis Patients. The journal of knee surgery. 2023;36(3):261-268. Ariga A, Kohno Y, Nakagawa Y, Watanabe T, Katagiri H, Ohara T, Shioda M, Ozeki N, Amemiya M, Okawa A, Sekiya I, Koga H. Simultaneous bilateral total knee arthroplasty is safe and effective for patients in different ages. J Orthop Sci. 2023;28(1):173-179. Mitomo S, Aizawa J, Hirohata K, Ohji S, Ohmi T, Ohara T, Koga H, Yagishita K. Association Between Knee Extension Strength at 3 and 6 Months After Anterior Cruciate Ligament Reconstruction. Journal of sport rehabilitation. 2023;32(1):76-84. Yamamoto N, Takada R, Jinno T, Miyatake K, Watanabe N, Koga H, Yoshii T, Yagishita K, Okawa A. Wear rate and osteolysis in two types of second-generation annealed highly cross-linked polyethylene in total hip arthroplasty: A retrospective comparative study with a minimum of five years. Orthopaedics & traumatology, surgery & research : OTSR. 2023;109(1):103147. 2022 Miyatake K, Katagiri H, Takada R, HIrao M, Watanabe N, Okawa A, Koga H, Jinno T. Acute femoral artery dissection during anterolateral approach in supine position for a total hip arthroplasty: A case report and literature review. JOS Case Reports. 2022;1(1):15-19 ?Katagiri H, Forster BB, Engebretsen L, An JS, Adachi T, Saida Y, Onishi K, Koga H. Epidemiology of MRI-detected muscle injury in athletes participating in the Tokyo 2020 Olympic Games. Br J Sports Med. 2022;57(4):218-224. Wakayama T, Saita Y, Nagao M, Uchino S, Yoshihara SI, Tsuji K, Koga H, Kobayashi Y, Nishio H, Momoi Y, Ikeda H, Kaneko K, Ishijima M. Intra-Articular Injections of the Adipose-Derived Mesenchymal Stem Cells Suppress Progression of a Mouse Traumatic Knee Osteoarthritis Model. Cartilage. 2022;13(4):148-156. Ohji S, Aizawa J, Hirohata K, Ohmi T, Mitomo S, Koga H, Yagishita K. Changes in subjective knee function and psychological status from preoperation to 6 months post anterior cruciate ligament reconstruction. J Exp Orthop. 2022;9(1):114. ?Koga H, Nakamura T, Nakagawa Y, Ozeki N, Hoshino T, Amemiya M, Sekiya I. Simultaneous Correction of Varus Deformity and Posterior Tibial Slope by Modified Hybrid Closed-Wedge High Tibial Osteotomy. Arthrosc Tech. 2022;11(11):e2081-e2089. Watanabe N, Miyatake K, Takada R, Ogawa T, Amano Y, Jinno T, Koga H, Yoshii T, Okawa A. The prevalence and treatment of osteoporosis in patients undergoing total hip arthroplasty and the levels of biochemical markers of bone turnover. Bone Joint Res. 2022;11(12):873-880. Fujii S, Endo K, Ozeki N, Sakamaki Y, Kohno Y, Mizuno M, Katano H, Tsuji K, Koga H, Sekiya I. Comparison of adhesion of thawed and cultured synovial mesenchymal stem cells to the porcine meniscus and the relevance of cell surface microspikes. BMC Mol Cell Biol. 2022;23(1):53. Murofushi K, Yamaguchi D, Katagiri H, Hirohata K, Furuya H, Mitomo S, Oshikawa T, Kaneoka K, Koga H, Yagishita K. Validity of the KOJI AWARENESS self-screening test for body movement and comparison with functional movement screening. PLoS One. 2022;17(12):e0277167. Tanimoto T, Endo K, Sakamaki Y, Ozeki N, Katano H, Mizuno M, Koga H, Sekiya I. Human synovial mesenchymal stem cells show time-dependent morphological changes and increased adhesion to degenerated porcine cartilage. Sci Rep. 2022;12(1):16619. ?Katagiri H, Shioda M, Nakagawa Y, Ohara T, Ozeki N, Nakamura T, Sekiya I, Koga H. Risk Factors Affecting Return to Sports and Patient-Reported Outcomes After Opening-Wedge High Tibial Osteotomy in Active Patients. Orthop J Sports Med. 2022;10(9):23259671221118836. Murofushi K, Yamaguchi D, Katagiri H, Hirohata K, Furuya H, Mitomo S, Oshikawa T, Kaneoka K, Koga H. The relationship between movement self-screening scores and pain intensity during daily training. J Med Invest. 2022;69(3.4):204-216. Isono M, Takeuchi J, Maehara A, Nakagawa Y, Katagiri H, Miyatake K, Sekiya I, Koga H, Asou Y, Tsuji K. Effect of CD44 signal axis in the gain of mesenchymal stem cell surface antigens from synovial fibroblasts in vitro. Heliyon. 2022;8(10):e10739. Watanabe N, Takada R, Ogawa T, Miyatake K, Hirao M, Hoshino C, Jinno T, Koga H, Yoshii T, Okawa A. Short stature and short distance between the anterior acetabular rim to the femoral nerve are risk factors for femoral nerve palsy following primary total hip arthroplasty using the modified Watson-Jones approach. Orthop Traumatol Surg Res. 2022;108(6):103351. ?Nakagawa Y, Ozeki N, Koga H. A narrative review of lateral meniscus root tears and extrusion: techniques and outcomes. Annals of Joint. 2022;7:15. Sekiya I, Sasaki S, Miura Y, Aoki H, Katano H, Okanouchi N, Tomita M, Masumoto J, Koga H, Ozeki N. Medial Tibial Osteophyte Width Strongly Reflects Medial Meniscus Extrusion Distance and Medial Joint Space Width Moderately Reflects Cartilage Thickness in Knee Radiographs. J Magn Reson Imaging. 2022;56(3):824-834. Sekiya I, Koga H, Katano H, Mizuno M, Kohno Y, Otabe K, Ozeki N. Second-look arthroscopy after meniscus repair and synovial mesenchymal stem cell transplantation to treat degenerative flaps and radial tears of the medial meniscus: A case report. J Orthop Sci. 2022;27(4):821-834. Adachi T, Katagiri H, An JS, Engebretsen L, Tateishi U, Saida Y, Koga H, Yagishita K, Onishi K, Forster BB. Imaging-detected bone stress injuries at the Tokyo 2020 summer Olympics: epidemiology, injury onset, and competition withdrawal rate. BMC Musculoskelet Disord. 2022;23(1):763. Hirohata K, Aizawa J, Ohmi T, Ohji S, Mitomo S, Ohara T, Koga H, Yagishita K, Jinno T, Okawa A. Reactive strength index during single-limb vertical continuous jumps after anterior cruciate ligament reconstruction: cross-sectional study. BMC Sports Sci Med Rehabil. 2022;14(1):150. Aizawa J, Hirohata K, Ohji S, Ohmi T, Mitomo S, Koga H, Yagishita K. Cross-sectional study on relationships between physical function and psychological readiness to return to sport after anterior cruciate ligament reconstruction. BMC Sports Sci Med Rehabil. 2022;14(1):97. Tang G, Asou Y, Matsumura E, Nakagawa Y, Miyatake K, Katagiri H, Nakamura T, Koga H, Komori K, Sekiya I, Ezura Y, Tsuji K. Short cytoplasmic isoform of IL1R1/CD121a mediates IL1ß induced proliferation of synovium-derived mesenchymal stem/stromal cells through ERK1/2 pathway. Heliyon. 2022;8(5):e09476 ?Ozeki N, Koga H, Nakamura T, Nakagawa Y, Ohara T, An JS, Sekiya I. Ultrasound-Assisted Arthroscopic All-Inside Repair Technique for Posterior Lateral Meniscus Tear. Arthrosc Tech. 2022;11(5):e929-e935. Kohno Y, Koga H, Ozeki N, Matsuda J, Mizuno M, Katano H, Sekiya I. Biomechanical analysis of a centralization procedure for extruded lateral meniscus after meniscectomy in porcine knee joints. J Orthop Res. 2022;40(5):1097-1103. ?Hoshino T, Nakagawa Y, Inomata K, Ohara T, Katagiri H, Otabe K, Hiyama K, Katagiri K, Katakura M, Ueki H, Hayashi M, Nagase T, Sekiya I, Ogiuchi T, Muneta T, Koga H. Effects of different surgical procedures for meniscus injury on two-year clinical and radiological outcomes after anterior cruciate ligament reconstructions. -TMDU MAKS study. J Orthop Sci. 2022;27(1):199-206. Mizuno M, Matsuzaki T, Ozeki N, Katano H, Koga H, Takebe T, Yoshikawa HY, Sekiya I. Cell membrane fluidity and ROS resistance define DMSO tolerance of cryopreserved synovial MSCs and HUVECs. Stem Cell Res Ther. 2022;13(1):177. Hisashi K, Muneta T, Kohno Y, Sasaki M, Yamazaki J, Hayashi H, Koga H, Morito T. MRI study of medial meniscus degeneration of osteoarthritic knees with or without posterior root tear. J Exp Orthop. 2022;9(1):38. ?Ozeki N, Koga H, Sekiya I. Degenerative Meniscus in Knee Osteoarthritis: From Pathology to Treatment. Life (Basel). 2022;12(4):603. ?Ozeki N, Koga H, Nakamura T, Nakagawa Y, Ohara T, Kohno Y, Sekiya I. Surgical Repair of Symptomatic Wrisberg Variant Discoid Lateral Meniscus with Pull-Out Repair and Capsulodesis. Arthrosc Tech. 2022;11(1):e61-e68. Takada R, Jinno T, Miyatake K, Watanabe N, Koga H, Yoshii T, Okawa A. Difference in tapered wedge stem alignment between supine and lateral position in cementless total hip arthroplasty via modified Watson-Jones anterolateral approach. Eur J Orthop Surg Traumatol. 2022;32(3):497-503. Noda S, Hosoya T, Komiya Y, Tagawa Y, Endo K, Komori K, Koga H, Takahara Y, Sugimoto K, Sekiya I, Saito T, Mizoguchi F, Yasuda S. CD34(+)THY1(+) synovial fibroblast subset in arthritic joints has high osteoblastic and chondrogenic potentials in vitro. Arthritis Res Ther. 2022;24(1):45. Miura Y, Ozeki N, Katano H, Aoki H, Okanouchi N, Tomita M, Masumoto J, Koga H, Sekiya I. Difference in the joint space of the medial knee compartment between full extension and Rosenberg weight-bearing radiographs. Eur Radiol. 2022;32(3):1429-1437. Kohno Y, Mizuno M, Endo K, Ozeki N, Katano H, Matsumoto M, Kaneko H, Takazawa Y, Koga H, Sekiya I. Yields of mesenchymal stromal cells from synovial fluid reflect those from synovium in patients with rheumatoid arthritis. Tissue Cell. 2022;75:101727. Katano H, Ozeki N, Koga H, Tomita M, Suzuki K, Masumoto J, Sekiya I. Three-dimensional MRI shows cartilage defect extension with no separation from the meniscus in women in their 70 s with knee osteoarthritis. Sci Rep. 2022;12(1):4198.
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