Radiology Cases Dislocation of joint LSBU

Description: Given its requirement for mobility and less restrictive geometry, the shoulder is a common instance of dislocation. The humeral head is usually displaced anteriorly below the glenoid, which bears against or near the greater tuberosity. If chronic this will produce a defect in the humerus, the Hill-Sachs defect in the greater tuberosity, the result of accumulating microfractures. The geometry between bones of similar physical strength favours the end with the smallest radius of curvature and is part of the mechanism for the Fick theory of developing joints.