肩関節
Online ISSN : 1881-6363
Print ISSN : 0910-4461
ISSN-L : 0910-4461
肩関節挙上に伴う外旋角度の測定
丸山 公鈴木 精石塚 雅美町田 英一赤木 家康村上 知二水貝 直人菅原 黎明佐野 精司
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ジャーナル フリー

1990 年 14 巻 2 号 p. 192-196

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It is commonly known that elevation of the arm is combined with rotation. However it is very difficult to measure the rotational angle physiologically. We made a video-computer system for this and measured the angles during elevation in both the frontal and the scapular planes. A special bar (30g) was put on the elbow joint of twenty men and fifteen women.
An X-Y plotter was used to get the positions of the tip a nd the middle point of the bar. Then a personal computer was used to calculate the rotational angle and to analyse the transposition of the instant center of the shoulder joint. From this study we conclude that the rotational angle in the frontal plane that (102.6°) is larger than thar in the scapular plane (65.0°) and that thar of the right shoulder is larger than the left shoulder one. Furthermore, we found that there are two different patterns in the rotational angle.

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© 日本肩関節学会
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