1993 年 17 巻 1 号 p. 66-70
The range of rotation of the shoulder changes with the three dimensional position of the arm.
We measured the range of rotation in various positions of the arm.
A magnetic sensor system (3 SPACE TRACKER SYSTEM from McDonnel-Douglas Corp. ) was used to measure the rotation of the shoulder.
1) The subjects were 10 males.2) Six glenohumeral joints of cadavers were used. The rotator cuff was cut, while the capsule was reserved. The range of rotation of the shoulder in normal subjects was largest at 30° elevation and 30° posterior to the frontal plane, while in cadavers it was at 30° elevation in the scapular plane.