Toshiro Otani

ORCID: 0000-0001-6157-2254
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About
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Research Areas
  • Total Knee Arthroplasty Outcomes
  • Knee injuries and reconstruction techniques
  • Lower Extremity Biomechanics and Pathologies
  • Shoulder Injury and Treatment
  • Orthopaedic implants and arthroplasty
  • Sports injuries and prevention
  • Orthopedic Infections and Treatments
  • Osteoarthritis Treatment and Mechanisms
  • Orthopedic Surgery and Rehabilitation
  • Adhesion, Friction, and Surface Interactions
  • Foot and Ankle Surgery
  • Bone health and osteoporosis research
  • Musculoskeletal synovial abnormalities and treatments
  • Shoulder and Clavicle Injuries
  • Cardiovascular Effects of Exercise
  • Muscle activation and electromyography studies
  • Tendon Structure and Treatment
  • Vitamin D Research Studies
  • Elbow and Forearm Trauma Treatment
  • Bone and Joint Diseases
  • Venous Thromboembolism Diagnosis and Management
  • Cardiovascular Disease and Adiposity
  • Vitamin K Research Studies
  • Occupational Health and Performance
  • Meta-analysis and systematic reviews

International University of Health and Welfare
2021-2024

Keio University
2012-2021

Keio University Hospital
1998-2019

Saiseikai Matsuyama Hospital
2013

University of Leeds
2000

National Defense Medical College
1999

Marymount University
1999

Despite recommendations on how to prevent baseball injuries in youths by the Japanese Society of Clinical Sports Medicine, shoulder and elbow pain still frequently occurs young players. We conducted a questionnaire survey among players at elementary schools across country understand practice conditions players, examining risk factors The was school as members Baseball Federation Japan September 2015. A total 8354 belonging 412 teams (average age: 8.9) responded survey. Among 7894 who did not...

10.1016/j.jos.2017.03.016 article EN cc-by-nc-nd Journal of Orthopaedic Science 2017-05-04

Objective To investigate the association between mid‐trimester residual cervical length ( CL ) and risk of preterm birth in pregnancies after abdominal radical trachelectomy RT ). Design Retrospective cohort study. Setting University hospital. Population A total 33 deliveries 22 weeks’ gestation 30 women who underwent including prophylactic cerclage perinatal care January 2002 May 2016. Methods The (the distance external os) gestational age at delivery was investigated. Receiver–operating...

10.1111/1471-0528.14688 article EN BJOG An International Journal of Obstetrics & Gynaecology 2017-04-18

Consensus has been lacking as to how reconstruct the posterolateral corner (PLC) of knee in patients with instability. We describe a new reconstructive technique for PLC based on Larson's method, which reflects physiological load-sharing pattern lateral collateral ligament (LCL) and popliteofibular (PFL).Semitendinosus graft is harvested, one limb comprises PFL other LCL. Femoral bone tunnels LCL popliteus tendon are made at their anatomical insertions. Fibular tunnel prepared from insertion...

10.1186/1758-2555-4-21 article EN cc-by Sports Medicine Arthroscopy Rehabilitation Therapy & Technology 2012-06-13

Abstract Stress fractures are a limitation for athletes not only in sports performance but activities of daily living. Thus, preventing them is crucial. In female athletes, triad symptoms including low energy availability, functional hypothalamic amenorrhea and osteoporosis considered risk factors stress injuries, biomarkers predictive these outcomes available. Here, we evaluated 56 university found that 13 had history bone injuries. Logistic regression analysis demonstrated dysmenorrhea...

10.1038/s41598-018-36982-0 article EN cc-by Scientific Reports 2018-12-17

Despite proposals and guidelines to prevent baseball injuries in young players by societies organizations, many shoulder elbow continue occur among junior high school players. In order investigate the training conditions of risk factors for pain players, we conducted a questionnaire survey throughout country.The was September 2016.A total 11,134 belonging 495 teams responded survey. Among these, 4004 trained every day week 1151 played games month with no off-season. 9752 who did not have...

10.1016/j.jos.2018.12.018 article EN cc-by-nc-nd Journal of Orthopaedic Science 2019-01-09

The purpose of the current study was to longitudinally evaluate how preoperative knee kinematics change after ACL reconstruction. Three-dimensional gait analysis using point cluster method undertaken on same subjects preoperatively and at 3, 6, 12 months reconstructive surgery. Thirteen (7 males, 6 females) were examined while performing 2 different activities self-selected speeds: walking walk-pivoting (walking, pivoting toward landed limb side away). contralateral knees postoperatively...

10.1123/jab.2014-0175 article EN Journal of Applied Biomechanics 2015-06-02

Foot progression angle is a key factor for biomechanical knee load, which associated with noncontact anterior cruciate ligament (ACL) injury during sports-specific tasks. The purpose of the present study was to assess biomechanics trunk, pelvis, and lower extremities cutting maneuver under different foot angles.Nineteen male collegiate athletes (ages 18-24) participated in study. Cutting motion analyzed using eight infrared cameras (250 Hz), two force plates (1250 44 reflective markers....

10.1186/s40634-022-00447-1 article EN cc-by Journal of Experimental Orthopaedics 2022-01-18

The magnitude and location of the axis tibial rotation were measured at 15 degrees increments between 0 degree 90 flexion using 24 normal anatomic knee specimens, their changes with angle investigated. was small (8.3 degrees) flexion, but increased rapidly as reached a maximum (31.7 30 flexion. It then decreased again additional (24.8 flexion). close to insertion anterior cruciate ligament gradually moving toward posterior (observed 45 60 flexion), moved anteriorly flexion: approximately...

10.1097/00003086-200002000-00022 article EN Clinical Orthopaedics and Related Research 2000-02-01

Abstract Joint effusion after total knee arthroplasty (TKA) is considered as a manifestation of certain inflammatory reactions within prosthetic joints. This study investigated causes joint following TKA and analyzed phenotypic characteristics synovial fluid leukocytes for each cause. Forty‐six TKAs rheumatoid arthritis (RA) 49 osteoarthritis (OA) displaying were investigated. Causes clinically identified frequencies cause compared between RA OA. Synovial cell phenotypes using...

10.1002/jbm.a.31152 article EN Journal of Biomedical Materials Research Part A 2007-01-30

The effect of increased physical activity on bone mineral density (BMD) the lumbar vertebrae was examined in postmenopausal osteoporotic women. Thirty-five women, aged 53-77 years, whose BMD (L2-L4) measured by dual energy x-ray absorptiometry (Norland XR-26) below (>30%) young adult mean, were divided into two groups: a control group 20 women and an exercise 15 con-sisted daily outdoor walking gymnastic training performed for 12 months. During study period, all subjects treated with calcium...

10.2302/kjm.47.157 article EN The Keio Journal of Medicine 1998-01-01
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