Abduction of the arm in the scapular plane: scapular and glenohumeral movements. A roentgenographic study.

Abstract

1. The relative amounts of scapular (S) and glenohumeral (GH) movements have beets insvestigated roentgenographically, using sixty-one male subjects each with the arm in five positions of abduction in the scapular plane.2. The five positions of abduction studied yielded a number of interesting point