_Kocher's method_ is suitable for the great majority of cases of sub-coracoid dislocation. (1) The elbow is firmly pressed against the side, and the forearm flexed to a right angle. The surgeon grasps the wrist and elbow and firmly _rotates the humerus away from the middle line_ (Fig. 20) till distinct resistance is felt and the deltoid becomes more prominent. In this way the rent in the lower part of the capsule is made to gape, and the head of the humerus rolls away from the middle line till it lies opposite the opening, rotation taking place about the fixed point formed by the contact of the anatomical neck of the humerus with the anterior lip of the glenoid cavity (D. Waterston). (2) _The elbow is next carried forward, upward, and towards the middle line_ (Fig. 21); the humerus acting as the long arm of a lever on the fulcrum furnished by the muscles inserted in the region of the surgical neck, the head, which forms the short arm of the lever, is carried backward, downward, and laterally, and is thus directed towards the socket. (3) The humerus is now _rotated towards the middle line_ by carrying the hand across the chest towards the opposite shoulder (Fig. 22). The anatomical neck of the humerus is thus disengaged from the edge of the glenoid, and the head is pulled into the socket by the tension of the surrounding muscles. [Illustration: FIG. 20.--Kocher's Method of reducing Sub-coracoid Dislocation--First Movement; Rotation of Arm away from Middle Line.] [Illustration: FIG. 21.--Kocher's Method--Second Movement; Elbow carried forward, upward, and towards the Middle Line.] [Illustration: FIG. 22.--Kocher's Method--Third Movement; Rotation of Arm towards Middle Line.] A method of reduction has been formulated by A. G. Miller, which we have found to be quite as successful as Kocher's method. The limb is grasped above the wrist and elbow, the forearm flexed to a right angle, and the upper arm abducted to the horizontal (Fig. 23). While an assistant makes counter-extension and fixes the scapula, the surgeon gradually draws the arm away from the body till the head of the humerus is felt to pass laterally. The humerus is then rotated medially by dropping the hand (Fig. 24), and the bone gradually glides into the socket. [Illustration: FIG. 23.--Miller's Method of reducing Sub-coracoid Dislocation--First Movement.] [Illustration: FIG. 24.--Miller's Method of reducing Sub-coracoid Dislocation--Second Movement.]