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

Figure 2 Position. A: Position of the needle with the arm in maximal medial rotation. The needle has passed the capsule perpendicularly. Notice that a part of the opening of the needle is still outside the capsule; B: After a small lateral rotation, the bevel of the needle has been pulled under the capsule into the joint. Notice that the tip of the needle is in contact with the cartilage, but does not change its position with respect to the cartilage during the rotation.