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Affiliation |
Faculty of Medicine College Hospital Rehabilitation part |
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Title |
Assistant Professor |
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Related SDGs |
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IMAZATO Hiroyuki
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Papers 【 display / non-display 】
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受傷4か月後に観血的整復を要した小児陳旧性外傷性股関節脱臼の1例 Reviewed
大野 鉄平, 中村 嘉宏, 今里 浩之, 福永 幹, 藤田 貢司, 山口 洋一朗, 日吉 優, 舩元 太郎, 坂本 武郎, 帖佐 悦男
整形外科と災害外科 73 ( 4 ) 832 - 834 2024.9
Authorship：Lead author, Last author, Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：西日本整形・災害外科学会
【はじめに】小児の外傷性股関節脱臼は稀で，陳旧例の報告はほとんどない．観血的整復を要した小児の陳旧性股関節脱臼を報告する．【症例】12歳女児．前後に開脚するように受傷，膝関節痛と歩行困難を示した．近医にて保存加療されていたが，受傷4か月に外傷性股関節脱臼の診断で，当院受診となった．観血的脱臼整復術を施行，寛骨臼内は線維組織が充満しており，同部を切除し脱臼を整復した．【考察】小児の陳旧性外傷性股関節脱臼は極めて稀である．外傷性脱臼はすみやかに整復すべきであるが，陳旧例では寛骨臼内に線維組織が充満し，非観血的整復が困難なことが多い．小児の膝関節痛では本疾患を疑うことも必要である．
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Insertion sites of the muscles attached to the clavicle: a cadaveric study of the clavicle Reviewed
Imazato H., Takahashi N., Sawaguchi A., Hirakawa Y., Yamaguchi Y., Hiyoshi M., Tajima T., Chosa E.
BMC Musculoskeletal Disorders 24 ( 1 ) 160 2023.12
Authorship：Lead author, Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：BMC Musculoskeletal Disorders
Background: Clavicle fractures are common injuries, especially in young, active individuals. Operative treatment is recommended for completely displaced clavicle shaft fractures, and plate fixation is stronger than the use of intramedullary nails. Few studies have reported on iatrogenic injuries to the muscle attached to the clavicle during fracture surgery. The aim of this study was to clarify the area of the insertion sites of muscles attached to the clavicle in Japanese cadavers using gross anatomy and three-dimensional (3D) analysis. We also aimed to compare the effects of anterior plate templating and superior plate templating on clavicle shaft fractures using 3D images. Methods: Thirty-eight clavicles from Japanese cadavers were analyzed. We removed all clavicles to identify the insertion sites and measured the size of the insertion area of each muscle. Three-dimensional templating was performed on both the superior and anterior plates of the clavicle using data obtained from computed tomography. The areas covered by these plates on the muscles attached to the clavicle were compared. Histological examination was performed on four randomly selected specimens. Results: The sternocleidomastoid muscle was attached proximally and superiorly; the trapezius muscle was attached posteriorly and partly superiorly; and the pectoralis major muscle and deltoid muscles were attached anteriorly and partially superiorly. The non-attachment area was located mainly in the posterosuperior part of the clavicle. It was difficult to distinguish the borders of the periosteum and pectoralis major muscles. The anterior plate covered a significantly broader area (mean 6.94 ± 1.36 cm<sup>2</sup>) of the muscles attached to the clavicle than did the superior plate (mean 4.11 ± 1.52 cm<sup>2</sup>) (p < 0.0001). On microscopy, these muscles were inserted directly into the periosteum. Conclusion: Most of the pectoralis major and deltoid muscles were attached anteriorly. The non-attachment area was located mainly from the superior to posterior part of the clavicle midshaft. Both macroscopically and microscopically, the boundaries between the periosteum and these muscles were difficult to demarcate. The anterior plate covered a significantly broader area of the muscles attached to the clavicle than that by the superior plate.
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Imazato H., Takahashi N., Hirakawa Y., Yamaguchi Y., Hiyoshi M., Tajima T., Chosa E., Sawaguchi A.
Scientific Reports 13 ( 1 ) 6352 2023.12
Authorship：Lead author, Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Scientific Reports
Recent physiological studies have shown that the deep fascia has received much attention concerning clinical medicine; however, histological examination of the deep fascia has not been well established. In this study, we aimed to clarify and visualize the structure of the deep fascia by taking advantage of cryofixation techniques and low-vacuum scanning electron microscopy. As a result, the ultrastructural observations revealed three-dimensional stratification of the deep fascia composed of three layers: the first superficial layer consisting of collagen fibers extending in various directions with blood vessels and peripheral nerves; the second intermediate layer formed by single straight and thick collagen fibers with flexibility; and the third deepest layer, consisting of relatively straight and thin collagen fibers. We explored the use of two hooks to hold a piece of deep fascia in place through the course of cryo-fixation. A comparative observation with or without the hook-holding procedure would indicate the morphological adaptation to physiological stretch and contraction of the deep fascia. The present morphological approach paves the way to visualize three-dimensional ultrastructures for future biomedical studies including clinical pathophysiology.
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股関節高位脱臼に対して大腿骨遠井短縮骨切りを併用した人工関節再置換術の1例 Reviewed
座間味陽、中村嘉宏、坂本武郎、舩元太郎、日吉優、山口洋一朗、今里浩之、平川雄介、帖佐悦男
整形外科と災害外科 72 ( 3 ) 424 - 426 2023.9
Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：西日本整形・災害外科学会機関誌
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県境をまたいで転送されたGustilo ⅢB足関節開放骨折 -南九州重度四肢外傷トラウマネットワーク初回症例- Reviewed
村岡辰彦、上野宜功、増田圭吾、井上三四郎、日吉優、今里浩之、石原和明、天辰愛弓、瀬戸山傑
整形外科と災害外科 72 ( 3 ) 384 - 386 2023.9
Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：西日本整形・災害外科学会機関誌
Presentations 【 display / non-display 】
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Three-dimensional fine structures in deep fascia revealed by combined use of cryo-fixed histochemistry and low-vacum scanning microscopy International conference
Hiroyuki imazato、Nobuyasu Takahashi、Yusuke Hirakawa、Yoichiro Yamaguchi、Masaru Hiyoshi、Takuya Tajima、Etsuo Chosa and Akira Sawaguchi
ORS2024 ANNUAL MEETING
Event date： 2024.2.2 - 2024.2.6
Presentation type：Poster presentation
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Predicting The Clinical Decision Limits of Locomotive Syndrome from The Screening Questionnaire Using Machine Learning International conference
Yoichiro Yamaguchi、Hiroyuki Imazato、Takuji Yokoe、Yudai Morita、Takuya Tajima、Etsuo Chosa
ORS2024 ANNUAL MEETING
Event date： 2024.2.2 - 2024.2.6
Presentation type：Poster presentation
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宮崎県におけるラグビープロチームのキャンプメディカルサポート
森田恭史、田島卓也、今里浩之、岩佐一真、吉川大輔、三橋龍馬、中村嘉宏、帖佐悦男
第35回九州・山口スポーツ医・科学研究会 2023.12.9
Event date： 2023.12.9
Presentation type：Oral presentation (general)
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宮崎県の高校ラグビーにおけるメディカルサポート体制－5年間の外傷調査－
森田恭史、今里浩之、中村嘉宏、田島卓也、帖佐悦男、吉川大輔、岩佐一真
第35回九州・山口スポーツ医・科学研究会 2023.12.9
Event date： 2023.12.9
Presentation type：Oral presentation (general)
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宮崎県の高校ラグビーにおけるメディカルサポート体制－5年間の外傷調査－
森田恭史、今里浩之、中村嘉宏、田島卓也、吉川大輔、岩佐一真、帖佐悦男
第34回日本臨床スポーツ医学会学術集会 2023.11.11
Event date： 2023.11.11 - 2023.11.12
Presentation type：Poster presentation
Grant-in-Aid for Scientific Research 【 display / non-display 】
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ヒト筋膜の三次元微細構造の視覚化と病的変化の究明
Grant number：24K19626 2024.04 - 2027.03
独立行政法人日本学術振興会 科学研究費基金 若手研究
Authorship：Principal investigator