Fig. 4From: Acromioclavicular joint instability on cross-body adduction view: the biomechanical effect of acromioclavicular and coracoclavicular ligaments sectioningPoint A: Inferior edge of the clavicle in the acromioclavicular joint. Point B: Superior edge of the acromion in the acromioclavicular joint. Clavicle overriding on the cross-body adduction view was defined as the superior and posterior displacement of point A compared to that of point BBack to article page