Fig. 2

Radiological assessment of humeral position after surgical repositioning and during convalescence: A line from the upper to the lower limit of joint surface (A–B line), and a perpendicular line to A–B were drawn through the center of the humeral head (C–D line). The angle alpha between this line and the bisecting line of the humeral shaft (E–F line) was called head-shaft-angle. The distance between the screw top and the joint surface (d) was also measured