Improving accuracy for intra-articular injections for capsulitis of the shoulder by changing the injection technique

Figure 3 Position of needle. A: The patient sits with the arm in medial rotation by placing the lower arm on the trunk. The surgeon's index finger is placed on the coracoid process. The skin was punctured two cm below the point where the acromion and the spine of the scapula meet in the direction of the coracoid process; B: The position of the forearm after 25-35 degrees lateral rotation. Notice that the needle has moved slightly deeper into the body than in the starting position in Figure 3A.