29Conducting a wide range of research on various lower limb disordersLower Extremities GroupLower Extremities Group(Chief:Masanori Okamoto, Assistant professor (xed - term))(Chief:Masanori Okamoto, Assistant professor (xed - term))Orthopaedic SurgerySummary of ActivityThe Lower Extremities Group at Shinshu University conducts extensive research on various disorders of the lower extremities (hip, knee, and ankle joints). We have published widely on the development of a navigation system for anterior cruciate ligament (ACL) surgery, in addition to anatomical studies of the hip joint and ACL. In collaboration with Teijin Nakashima Medical, we are also developing surgical instruments for artificial joint replacement that can be used in conjunc-tion with preoperative planning software. We are developing new techniques for ACL reconstruction, exploring new surgical methods, and researching various factors that affect the postoperative function of our patients.・Research on the anatomical morphology of the ACL・Development of a new surgical approach to facilitate early recovery after ACL reconstruc-tion・Development of a new surgical assistance system for artificial joint surgery・Analysis of factors affecting postoperative function in artificial knee replacement surgery・Provide safe, minimally invasive, and high-performing artificial joint surgery ・Aim to develop surgical techniques for ACL reconstruction that enable athletes an early and safe return to competition.Through the diagnosis and treatment of disorders in the lower extremities, you can cultivate broad skills that can be applied to a wide range of issues. We will strengthen our research in specific fields and simultaneously aim to conduct top-level research in a global context.Research subjectOutlook for researchOutlook for students after graduationNavigation system for ACL surgeryArticial knee replacement: surgical instrument simulationAnatomical research of ACL attachmentTranslating Clues from Clinical Practice into the Research FieldUpper Extremities GroupUpper Extremities Group（（Chief: Senior Assistant Prof.Chief: Senior Assistant Prof. Masanori Hayashi Masanori Hayashi ））Orthopaedic SurgerySummary of ActivityUpper extremity surgery is a field aimed at restoring the function of upper ex-tremities that are injured by trauma or disease. Our group takes clues from our clinical practice and translates them into research with wide-ranging themes. In order to share our research with the world, we present at international confer-ences and submit papers to international journals, particularly on the diagnosis and treatment of peripheral nerves, tendon rupture, arthritis, elbow disease, tenocyte differentiation, and stenosing tenosynovitis.・ Development of a surgical procedure for the elbow joint ・ Cohort study of Obuse resident (Obuse study)・ Study on imaging findings and postoperative results of peripheral neuropathy・ Development of tendon suture and transplantation methods ・ Elucidation of the tenocyte differentiation and tenosynovitis onset mechanism・Application of results from research to the practical treatment of patients・New preventative measures against geriatric diseases, such as locomotive syndrome and osteoporosis・The mechanism of tenocyte differentiation and onset of tenosynovitis can be applied to the development of regenerative therapy and new treatment.Through research, you can deepen your knowledge of diseases related to upper limb sur-gery. Developing a keen eye for multifaceted phenomena will be useful for future clinical practice and further research.Research subjectOutlook for researchOutlook for students after graduationPhotograph taken during tendon transfer surgery Flexor tendon of Lubrisyn knockout mouseInduction of tenocyte differentiation by myostatin
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