CLINICAL VALUES OF THE FUNCTIONAL SHOULDER COMPLEX MEASURED WITH A DYNAMOMETER

• Published in: Journal of The Showa Medical Association Vol. 57; no. 3; pp. 293 - 297
• Main Authors: UCHIKAWA Tomoyoshi, TSUTSUI Hiroaki, MIHARA Kenichi, HOKARI Shigeru, SUZUKI Kazuhide, UESATO Hajime, OSHIMA Yawara, KAN Naoki, MAKIUCHI Daisuke, MATSUHISA Takayuki, YAMAGUCHI Mitsukuni, ENDO Masaru, YAMAMOTO Ryuji
• Format: Journal Article
• Language: English
• Published: 昭和大学学士会 1997; The Showa University Society
• Subjects: concentric contraction; isokinetic contraction; joint torque; shoulder; 求心性収縮; 等運動性収縮; 肩; 関節のトルク
• ISSN: 0037-4342; 2185-0976
• DOI: 10.14930/jsma1939.57.293

The function of the shoulder joint, which consists of three anatomical joints and one functional joint, is completely different from that of other joints.Therefore, assessment with an isokinetic dynamometer doesn't directly reflect shoulder function. The aim of this study was to review the check points and the clinical values of this system.(Method) Ten normal volunteers were examined. External rotational strength was measured with a KIN-COM 500H under various conditions at 60 and 180 degrees/second concentric contraction.(Results) In each subject, mean force and mean torque of exteral rotation varied with different conditions. It was difficult to measure the peak torque and peak force accurately. The forces scattered depending on whether the body was fixed or not during examination.Overall, it was difficult to measure shoulder strength under uniform, proper conditions.(Conclusion) When we measured the muscle strength of the shoulder joint using an isokinetic dynamometer, the most important point was to standardize the measuring position and conditions. 筋力測定機KIN-COM 500Hを用い, 肩関節に既往のない健常成人10例 (男性5例5関節, 女性5例5関節) 計10例10関節について肩関節外旋運動筋力評価を行い, 肢位条件の変化により得られる結果について検討した. (1) 第1肢位および第2肢位でのFORCEの平均値, (2) トルクの3回のそれぞれの値と平均値, (3) 同一被験者で3回測定施行したデータの解析, (4) 連続18回運動, (5) 角速度の変化, (6) 肩甲骨を固定した場合としない場合との比較, (7) 個々の被験者における, 日常測定時に見落としやすいチェックポイントの7項目についての結果を, トルク測定装置を用いる場合の基本的な変動要因 (1) 機器の特性, (2) 測定方法による要因, (3) 被測定者における変動要因の3つに分けて考察した.肩関節が各運動ともshoulder complexとしての運動であることを考慮すると, 筋力測定機器は肩関節の単一筋の筋力測定目的には使用できず, 同機器を用いて肩関節の筋力評価を行う場合, 測定肢位や測定時の固定などを厳密に規定することは当然であるがそれでも再現性については疑問が残る.