Fig. 8
Hill-Sachs Quotient. a) True AP x-ray of the humerus with the shoulder in 60° internal rotation to measure the width (x) and depth (y) of the lesion. b) Bernageau profile view to measure the length (z) of the lesion. The Hill-Sachs Quotient is calculated by multiplying x, y and z. Grade: I <1.5 cm2; II 1.5-2.5 cm2; III > 2.5 cm2 (Adapted from Kralinger et al. [39])