Tokushima University / Educator and Researcher Directory --- Iwase, Jyoji

Field of Study

Subject of Study

Book / Paper

Book:

1.	Jyoji Iwase and Koichi Sairyo : 胸骨骨折, Nakayama-Shoten Co., Ltd., 2022.
2.	Jyoji Iwase and Tetsuya Matsuura : 成長期野球選手と骨軟骨障害について, 2022.

Academic Paper (Judged Full Paper):

1.	Yasuaki Tamaki, Tomohiro Goto, Jyoji Iwase, Keizo Wada, Yasuyuki Ohmichi, Daisuke Hamada, Yoshihiro Tsuruo and Koichi Sairyo : Relationship between iliopsoas muscle surface pressure and implant alignment after total hip arthroplasty: a cadaveric study., Scientific Reports, Vol.13, No.1, 2023. (Summary) Iliopsoas impingement after total hip arthroplasty is caused by the implant irritating the iliopsoas muscle, but changes in the iliopsoas muscle have not been quantitatively evaluated. This study assessed changes in the surface pressure of the iliopsoas muscle when the implant alignment was varied. Total hip arthroplasty was performed in 10 fresh-frozen cadaveric hips. We evaluated the maximum and mean surface pressure of the iliopsoas muscle with the hip in 20° and 10° extension, the neutral position, and 10° flexion when the anterior cup protrusion length (ACPL), stem version, and stem offset were varied. When the ACPL was changed to 0, 3, and 6 mm in 20° extension, the maximum surface pressure was significantly increased for ACPL of 6 mm compared with 0 mm. Decreased stem anteversion resulted in a significant reduction in both the maximum and mean surface pressure compared with native anteversion from 20° extension to the neutral position. Increased stem offset resulted in significant increases in the maximum and mean surface pressure of the iliopsoas muscle compared with decreased stem offset in 20° extension. Not only large ACPL but also changes in stem version and offset affected the maximum surface pressure of the iliopsoas muscle. (Keyword) Humans / Arthroplasty, Replacement, Hip / Prostheses and Implants / Plastic Surgery Procedures / Cadaver / Muscles (Link to Publication Site) ● Publication site (DOI): 10.1038/s41598-023-30734-5 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36859708 ● Search Scopus @ Elsevier (PMID): 36859708 ● Search Scopus @ Elsevier (DOI): 10.1038/s41598-023-30734-5 (DOI: 10.1038/s41598-023-30734-5, PubMed: 36859708)
2.	Tetsuya Okahisa, Tetsuya Matsuura, Ken Tomonari, Kouji Komatsu, Kenji Yokoyama, Jyoji Iwase, Megumi Yamada and Koichi Sairyo : Between-day reliability and minimum detectable change of the Conventional Gait Model 2 and Plug-in Gait Model during running., Gait & Posture, Vol.100, 171-178, 2023. (Summary) The between-day reliability of CGM2 was mostly good to excellent for lower limb kinematics and kinetics during running. We believe that CGM2 can more accurately assess kinematic differences between the coronal and transverse planes than the PiG. (Link to Publication Site) ● Publication site (DOI): 10.1016/j.gaitpost.2022.12.006 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36563589 ● Search Scopus @ Elsevier (PMID): 36563589 ● Search Scopus @ Elsevier (DOI): 10.1016/j.gaitpost.2022.12.006 (DOI: 10.1016/j.gaitpost.2022.12.006, PubMed: 36563589)
3.	Yasuaki Tamaki, Tomohiro Goto, Jyoji Iwase, Keizo Wada, Daisuke Hamada, Yoshihiro Tsuruo and Koichi Sairyo : Contributions of the ischiofemoral ligament, iliofemoral ligament, and conjoined tendon to hip stability after total hip arthroplasty : a cadaveric study, Journal of Orthopaedic Research, 2022. (Summary) An adequate soft tissue balance is important in total hip arthroplasty (THA). This study assessed the contribution of the iliofemoral ligament, ischiofemoral ligament, and conjoined tendon to the range of hip rotation after THA and hip stability in response to axial traction. THA was performed in eight fresh-frozen cadaveric specimens via an anterolateral approach using a navigation system. The ischiofemoral ligament, the medial arm of the iliofemoral ligament, and the conjoined tendon were resected in that order. The ranges of external and internal rotation and the amount of movement of the femoral head in response to axial traction were measured with the hip in 10° of extension, the neutral position, and in 10°, 30°, and 60° of flexion. Resection of the medial arm of the iliofemoral ligament significantly increased the range of external rotation in 10° of extension, the neutral position, and in 10°, 30°, and 60° of flexion. The conjoined tendon was the most important inhibitor of internal rotation from 10° of extension to 30° of flexion. Although each single element had a minor role in stabilizing the hip when axial traction was applied, resection of two or more elements significantly affected joint stability. The iliofemoral ligament and conjoined tendon are the main inhibitors of external rotation and internal rotation, respectively, when THA is performed using an anterior or anterolateral approach. Resection of two or more elements could greatly affect hip stability when axial traction is applied. (Tokushima University Institutional Repository) ● Metadata: 117209 (Link to Publication Site) ● Publication site (DOI): 10.1002/jor.25320 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35266582 ● Search Scopus @ Elsevier (PMID): 35266582 ● Search Scopus @ Elsevier (DOI): 10.1002/jor.25320 (Tokushima University Institutional Repository: 117209, DOI: 10.1002/jor.25320, PubMed: 35266582)
4.	Toshiyuki Iwame, Tetsuya Matsuura, Naoto Suzue, Sakurako Katsuura-Kamano, Shoichiro Takao, Jyoji Iwase and Koichi Sairyo : One-year follow-up ultrasonographic study of the subchondral bone surface of the distal femoral epiphysis in children aged 9-11 years., Journal of Pediatric Orthopaedics. Part B, Vol.31, No.2, e174-e179, 2022. (Summary) Subchondral bone surface irregularity of the distal femoral epiphysis was more common on US in growing children aged 9-11 years, and transition from an irregular to a smooth outline accelerated after age 10 years. US is a reliable method for assessing the morphology of the distal femoral epiphysis and could be a useful screening tool for detecting OCD. (Link to Publication Site) ● Publication site (DOI): 10.1097/BPB.0000000000000885 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 34074919 ● Search Scopus @ Elsevier (PMID): 34074919 ● Search Scopus @ Elsevier (DOI): 10.1097/BPB.0000000000000885 (DOI: 10.1097/BPB.0000000000000885, PubMed: 34074919)
5.	Tetsuya Matsuura, Yuki Takata, Toshiyuki Iwame, Jyoji Iwase, Kenji Yokoyama, Shoichiro Takao, Susumu Nishio, Kokichi Arisawa and Koichi Sairyo : Limiting the Pitch Count in Youth Baseball Pitchers Decreases Elbow Pain., Orthopaedic Journal of Sports Medicine, Vol.9, No.3, 2021. (Summary) A pitch count limit of 70 pitches per day for baseball pitchers 12 years could be more protective against elbow pain and reduced flexion than a limit of 7 innings per day, but it may not be effective for reducing the risk of capitellar OCD. (Tokushima University Institutional Repository) ● Metadata: 116617 (Link to Publication Site) ● Publication site (DOI): 10.1177/2325967121989108 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33796588 ● Search Scopus @ Elsevier (PMID): 33796588 ● Search Scopus @ Elsevier (DOI): 10.1177/2325967121989108 (Tokushima University Institutional Repository: 116617, DOI: 10.1177/2325967121989108, PubMed: 33796588)
6.	Toshiyuki Iwame, Tetsuya Matsuura, T Okahisa, S Katsuura-Kamano, Keizo Wada, Jyoji Iwase and Koichi Sairyo : Quadriceps strength to body weight ratio is a significant indicator for initiating jogging after anterior cruciate ligament reconstruction., The Knee, Vol.28, 240-246, 2021. (Summary) Quadriceps strength recovery after anterior cruciate ligament (ACL) reconstruction is an important criterion for progress in rehabilitation and return to sports. The purpose of this study was to determine whether quadriceps strength to body weight ratio (QS/BW) is a significant indicator for initiating jogging after ACL reconstruction. (Tokushima University Institutional Repository) ● Metadata: 116081 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.knee.2020.12.010 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33429149 ● Search Scopus @ Elsevier (PMID): 33429149 ● Search Scopus @ Elsevier (DOI): 10.1016/j.knee.2020.12.010 (Tokushima University Institutional Repository: 116081, DOI: 10.1016/j.knee.2020.12.010, PubMed: 33429149)
7.	Tetsuya Matsuura, Toshiyuki Iwame, Jyoji Iwase and Koichi Sairyo : Osteochondritis Dissecans of the Capitellum :Review of the Literature., The Journal of Medical Investigation : JMI, Vol.67, No.3.4, 217-221, 2020. (Summary) Osteochondritis dissecans (OCD) of the capitellum is a leading cause of elbow disability in adolescent baseball players. Previous studies have not found an association of player position with capitellar OCD. Elbow pain and a longer playing history might be related to progression of capitellar OCD but do not in themselves increase the risk of development of the condition. The cause of capitellar OCD is likely to include a combination of repetitive microtrauma and internal factors, such as ischemia and genetic predisposition. A combination of radiography, computed tomography, magnetic resonance imaging, and ultrasonography have aided our understanding of the pathology of capitellar OCD. Screening using ultrasonography enables early detection and provides an opportunity for successful conservative treatment. Treatment has conventionally included both operative and nonoperative measures based on the stage and size of the lesion, skeletal maturity, subjective symptoms, and structural integrity of the cartilage. Early-stage lesions respond better to nonoperative treatment than those in more advanced stages. Operative indications include persistent symptoms despite nonoperative treatment, symptomatic loose bodies, and displacement or detachment of fragments. J. Med. Invest. 67 : 217-221, August, 2020. (Tokushima University Institutional Repository) ● Metadata: 115407 (Link to Publication Site) ● Publication site (DOI): 10.2152/jmi.67.217 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33148891 ● Search Scopus @ Elsevier (PMID): 33148891 ● Search Scopus @ Elsevier (DOI): 10.2152/jmi.67.217 (Tokushima University Institutional Repository: 115407, DOI: 10.2152/jmi.67.217, PubMed: 33148891)
8.	Toshiyuki Iwame, Tetsuya Matsuura, Tetsuya Okahisa, Jyoji Iwase, Hirokazu Uemura and Koichi Sairyo : Factors correlating with recovery of quadriceps strength after double-bundle anterior cruciate ligament reconstruction with hamstring tendon autografts., European Journal of Orthopaedic Surgery & Traumatology, Vol.30, No.2, 307-312, 2020. (Summary) Recovery of quadriceps strength after anterior cruciate ligament (ACL) reconstruction is one of the criteria used to promote rehabilitation and return to play. The purpose of this study was to investigate the factors associated with recovery of quadriceps strength after ACL reconstruction with hamstring tendon autografts. (Link to Publication Site) ● Publication site (DOI): 10.1007/s00590-019-02580-7 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31612316 ● Search Scopus @ Elsevier (PMID): 31612316 ● Search Scopus @ Elsevier (DOI): 10.1007/s00590-019-02580-7 (DOI: 10.1007/s00590-019-02580-7, PubMed: 31612316)
9.	Toshiyuki Iwame, Tetsuya Matsuura, Naoto Suzue, Jyoji Iwase, Hirokazu Uemura and Koichi Sairyo : Factors Associated With Knee Pain and Heel Pain in Youth Soccer Players Aged 8 to 12 Years., Orthopaedic Journal of Sports Medicine, Vol.7, No.11, 2019. (Summary) In this study of youth soccer players, knee pain was associated with older age and more years of play, but heel pain was not significantly associated with any factor. (Tokushima University Institutional Repository) ● Metadata: 115678 (Link to Publication Site) ● Publication site (DOI): 10.1177/2325967119883370 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31799330 ● Search Scopus @ Elsevier (PMID): 31799330 ● Search Scopus @ Elsevier (DOI): 10.1177/2325967119883370 (Tokushima University Institutional Repository: 115678, DOI: 10.1177/2325967119883370, PubMed: 31799330)

Review, Commentary:

1.	Jyoji Iwase and Tetsuya Matsuura : 成長期野球選手と骨軟骨障害, 臨床整形外科, Vol.57, No.5, 625-632, May 2022.
2.	Tetsuya Matsuura and Jyoji Iwase : 【集束型衝撃波(FSW):新たな疾患への挑戦I】肘離断性骨軟骨炎に対する応用の可能性, Monthly Book Orthopaedics, Vol.34, No.7, 70-74, Jul. 2021.

Proceeding of International Conference:

1.	Jyoji Iwase : Application of Extracorporeal Shockwave Therapy to Accelerate Healing of Osteochondral Injury in a Pig Model, 24TH WORLD CONGRESS OF THE INTERNATIONAL SOCIETY FOR MEDICAL SHOCKWAVE TREATMENT, Prsgue, The Czech Republic,WEB, Sep. 2022.
2.	Tetsuya Matsuura, Toshiyuki Iwame, Jyoji Iwase, Kenji Yokoyama and Koichi Sairyo : Long-term outcomes of arthroscopic debridement with or without drilling for osteochondritis dissecans of the capitellum in adolescent baseball players: a 10-year follow-up study, ISAKOS, Nov. 2021.

Proceeding of Domestic Conference:

1.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase, Toshiyuki Iwame and Koichi Sairyo : 肘離断性骨軟骨炎の小頭矢状面での病巣評価と鏡視下病巣郭清術前後の肘関節可動域の関連, 第34回日本肘関節学会学術集会(Web開催)【開催期間:2023年2月11日∼12日・2月25日∼3月25日】, Feb. 2023.
2.	Jyoji Iwase, Tetsuya Matsuura, Kenji Yokoyama and Koichi Sairyo : 体外衝撃波の肘離断性骨軟骨炎への応用, 日本肘関節学会雑誌, Vol.30, No.1, S268, 2023.
3.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase, Toshiyuki Iwame and Koichi Sairyo : コロナ禍での徳島県における少年野球検診, 第33回日本臨床スポーツ医学会学術集会【開催期間:2022年11月12日-13日】, Nov. 2022.
4.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase, Toshiyuki Iwame and Koichi Sairyo : 肘離断性骨軟骨炎の小頭矢状面での病巣評価と鏡視下病巣郭清術前後の肘関節可動域の関連, 第37回日本整形外科学会基礎学術集会(シーガイアコンベンションセンター)【開催期間:2022年10月13日-14日】, Oct. 2022.
5.	Jyoji Iwase, Tetsuya Matsuura, Kenji Yokoyama, Toshiyuki Iwame, Yoshihiro Tsuruo and Koichi Sairyo : 矢状断において上腕骨小頭に作成した骨軟骨欠損部位の違いによる応力分布の検討, 第37回日本整形外科学会基礎学術集会(シーガイアコンベンションセンター)【開催期間:2022年10月13日-14日】, Oct. 2022.
6.	Jyoji Iwase, Tetsuya Matsuura, Kenji Yokoyama and Koichi Sairyo : 骨軟骨損傷に対する体外衝撃波治療は組織修復を促進する, 第4回日本運動器SHOCK WAVE研究会学術集会(ハイブリッド)【開催期間:2022年9月11日・9月22日-10月9日】, Sep. 2022.
7.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase, Toshiyuki Iwame and Koichi Sairyo : 上腕骨外側上顆炎におけるMRI所見と集束型体外衝撃波療法の治療成績の関連, 第4回日本運動器SHOCK WAVE研究会学術集会(ハイブリッド)【開催期間:2022年9月11日・9月22日-10月9日】, Sep. 2022.
8.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase and Koichi Sairyo : CTによる肘離断性骨軟骨炎の病巣評価と，鏡視下郭清術後の肘関節可動域の関連, The Journal of the Japanese Orthopaedic Association, Vol.96, No.8, S1808, Sep. 2022.
9.	Jyoji Iwase, Tetsuya Matsuura, Kenji Yokoyama and Koichi Sairyo : 肘離断性骨軟骨炎に対する体外衝撃波治療, 第35回日本臨床整形外科学会学術集会【開催期間:2022年7月17日-18日】, Jul. 2022.
10.	Tetsuya Matsuura, Toshiyuki Iwame, Jyoji Iwase, Kenji Yokoyama and Koichi Sairyo : 早期発見した肘OCDに対する保存療法, JOSKAS-JOSSM 2022, Jun. 2022.
11.	Jyoji Iwase, Tetsuya Matsuura, Toshiyuki Iwame, Kenji Yokoyama and Koichi Sairyo : 当院における体外衝撃波治療の使用経験に関して, JOSKAS-JOSSM 2022【開催期間:2022年6月16日-18日】, Jun. 2022.
12.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase, Toshiyuki Iwame and Koichi Sairyo : Computed Tomography is More Useful for Accurate Measuring Osteochondral Defects of Osteochondritis Dissecans of the Elbow than Radiography., JOSKAS-JOSSM 2022【開催期間:2022年6月16日-18日】, Jun. 2022.
13.	Kenji Yokoyama, Tetsuya Matsuura, Jyoji Iwase, Toshiyuki Iwame and Koichi Sairyo : 超音波検査による成長期大腿骨遠位骨端部軟骨下骨所見の検者間・検者内信頼性, 第95回日本整形外科学会学術総会【開催期間:2022年5月19日-22日】, May 2022.
14.	Tetsuya Matsuura, Toshiyuki Iwame, Jyoji Iwase, Kenji Yokoyama and Koichi Sairyo : 肘離断性骨軟骨炎に対する体外衝撃波治療の経験, 第95回日本整形外科学会学術総会【開催期間:2022年5月19日-22日】, May 2022.
15.	Tetsuya Matsuura, Toshiyuki Iwame, Jyoji Iwase, Kenji Yokoyama and Koichi Sairyo : 肘離断性骨軟骨炎に対する体外衝撃波治療の経験, The Journal of the Japanese Orthopaedic Association, May 2022.
16.	Jyoji Iwase, Tetsuya Matsuura, Kenji Yokoyama and Koichi Sairyo : 離断性骨軟骨炎に対する体外衝撃波の応用, 第20回徳島スポーツ整形外科研究会, Feb. 2022.
17.	Kosuke Sugiura, Tetsuya Matsuura, Jyoji Iwase, Kenji Yokoyama and Koichi Sairyo : 体外衝撃波治療骨格筋への効果, 第20回徳島スポーツ整形外科研究会, Feb. 2022.
18.	Jyoji Iwase, Tetsuya Matsuura, Toshiyuki Iwame, Kenji Yokoyama, Yoshihiro Tsuruo and Koichi Sairyo : 上腕骨小頭における骨軟骨欠損部位の違いによる応力分布の検討, 第34回日本肘関節学会学術集会(Web開催) 【開催期間2022年2月11日∼12日・2月25日∼3月25日】, Feb. 2022.
19.	Tetsuya Matsuura, Jyoji Iwase, Kenji Yokoyama and Koichi Sairyo : コロナ禍での少年野球検診, 日本小児整形外科学会雑誌, Dec. 2021.
20.	Tetsuya Matsuura, Toshiyuki Iwame, Jyoji Iwase, Kenji Yokoyama, Shinji Kashiwaguchi, 岩瀬毅信 and Koichi Sairyo : 少年野球肘検診の過去，現在，未来, The Journal of the Japanese Orthopaedic Association, May 2021.
21.	Tetsuya Matsuura, Toshiyuki Iwame, 髙田侑季, Jyoji Iwase and Koichi Sairyo : 少年野球検診で発見された肘離断性骨軟骨炎の追跡調査, 日本肘関節学会雑誌, Feb. 2021.

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

1日70球の投球数制限で小学生の野球肘を予防できるのか？骨軟骨障害に着眼して (Project/Area Number: 21K11446 )
Search by Researcher Number (80868521)

Designated Assistant Professor : Iwase, Jyoji

Research

Field of Study

Subject of Study

Book / Paper

Book:

Academic Paper (Judged Full Paper):

Review, Commentary:

Proceeding of International Conference:

Proceeding of Domestic Conference:

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)