Characteristics of the Range of Shoulder Rotation Determined by Ultrasound in Humeral Retroversion in a Disabled Throwing Shoulder

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  • KAWAI Kentaro
    Department of Sports and Wellness Clinic, Jikei University School of Medicine

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Other Title
  • 投球障害肩症例における上腕骨頭後捻角度を考慮した肩回旋可動域の特徴
  • 投球障害肩症例における上腕骨頭後捻角度を考慮した肩回旋可動域の特徴 : 超音波画像診断装置を用いて
  • トウキュウ ショウガイ ケン ショウレイ ニ オケル ジョウワンコツトウ ゴネンカクド オ コウリョ シタ カタ カイセン カドウイキ ノ トクチョウ : チョウオンパ ガゾウ シンダン ソウチ オ モチイテ
  • ─超音波画像診断装置を用いて─

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Abstract

[Purpose] The purpose of this study was to evaluate the characteristics of the range of shoulder rotation in humeral retroversion in a disabled throwing shoulder. [Subjects] The subjects were 38 male pitchers with disabled throwing shoulders. [Methods] Using ultrasound, we measured and compared the range of shoulder rotation, and the influence of humeral retroversion on the pitching and non-pitching sides. [Results] The pitching side average humeral retroversion was 11 degrees greater than that of the non-pitching side. The pitching side had an average external rotation angle that was 9 degrees greater than that of the non-pitching side, the inner rotation angle showed an average decrease of 18 degrees, and total arc showed an average decrease of 9 degrees. All the differences were significant. [Conclusion] These results suggest that range of shoulder rotation in a disabled throwing shoulder is influenced by the boniness of humeral retroversion, and the shoulder soft-parts organization nature. <br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 29 (3), 345-349, 2014

    The Society of Physical Therapy Science

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