Is the elasticity of the flexor pronator muscles a predictor of the onset of the medial baseball elbow?

旋前屈肌的弹性是否可以预测内侧棒球肘的发生？

• 批准号: 21K17602
• 负责人: 田鹿 毅
• 金额: $ 0.83万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K17602/
• 关键词: 内側野球肘; 肘関節内側側副靭帯; 高校野球投手; 前腕屈筋; 筋弾性

【目的】本研究では、高校野球選手を対象に超音波share wave elastgraphyを用いて前腕屈筋群・円回内筋の弾性度と内側側副靭帯の弛緩性を測定し、これらの関係性を明らかにするとともに、内側野球肘を予防するための新たな評価法の確立を目指すことである。【対象と方法】対象は令和4年度は群馬県高校野球投手メディカルチェックを施行した高校野球投手116名（平均年齢16.5歳）である。問診から野球歴、現在の投球側内側肘関節痛の有無、投球能力自己評価（0-100点）を調査した。被験者は座位にて超音波エラストグラフィーによる両側前腕屈筋群（円回内筋、橈側手根屈筋、尺側手根屈筋、浅指屈筋、深指屈筋、前腕屈筋起始部）の各筋内における剪断波速度（shear speed）を測定した。また臥位にて投球側、非投球肘関節内側側副靱帯gravity test を施行し、超音波にて非ストレス時、ストレス時の内側肘関節裂隙の開大長を計測した。【結果】①投球側・非投球側前腕屈筋群の各筋内における剪断波速度比較において、円回内筋、腕屈筋起始部における剪断波速度は非投球側と比較し有意に増大を認めた。その他の筋において有意差は認められなかった。②投球側の各筋内剪断波速度と非ストレス時、ストレス時の内側肘関節裂隙の差に有意な相関を認めなかった。③投球側前腕屈筋群筋内剪断波速度（shear speed）の多重比較においては、橈側手根屈筋が、その他の筋と比較に有意に増大を認めた。④メディカルチェック施行時に内側肘関節痛を認めた選手は21人であった。認めない選手は95人であった。メディカルチェック施行時の内側肘関節痛の有無における2群において各筋内における剪断波速度の比較を行ったが、全ての部位において有意差は認められなかった。2群間において非ストレス時、ストレス時の内側肘関節裂隙の差に有意差を認めなかった。

[objective] the purpose of this study is to determine the relaxation of the front wrist flexion group and the internal tendon of the front wrist flexion group by using the ultrasound share wave elastgraphy in this study. the purpose of this study is to determine the relaxation of the front wrist flexion group, the internal ball elbow and the internal ball elbow. [elephant method] A total of 116 college wild pitchers (with an average annual age of 16.5 years) were put into practice in 2004. The problem is "wild ball", now there is a pain in the elbow in "pitching", and the ability to throw the ball on its own (0-100 points). The front wrist flexor group (internal tendon, hand root flexor, ulnar finger flexion, superficial finger flexion, deep finger flexion, and the beginning of forewrist flexion) was measured by the measurement of shear wave velocity (shear speed) in each tendon. The length of the crack in the elbow is calculated when the ball is not in the pitch position, the gravity test is used in the non-pitching elbow, the ultrasonic wave is not in the normal time, and the crack in the elbow is open in the normal time. [results] 1 the shear wave velocity of the non-pitching front wrist flexion group was higher than that of the non-pitching wrist flexion group. I don't know if he wants to know if he wants to make a mistake. (2) when the shear wave velocity in each bar of the ball is not good, the difference between the cracks in the elbow and the crack in the elbow is intentionally affected. (3) the internal shear wave velocity (shear speed) of the front wrist flexor tendons (Shear Wave Velocity) is larger than that of the forewrist flexor tendons. 4. During the implementation of the training program, 21 people were selected for the election of their elbows. A total of 95 people will be selected for the election. The speed of the shear wave in each rib is higher than that in the whole rib during the operation. The speed of the shear wave in each rib is higher than that in each rib. (2) there is an intentional difference in the gap between the elbows and the cracks in the group during the normal time and the time when the group is not working properly.