This procedure is primarily used to treat frozen shoulder (adhesive capsulitis). Using CT guidance, a needle is inserted in the back of the shoulder joint and filled with local anesthetic and then a cortisone/saline solution. The extra fluid in the shoulder can be painful during the procedure, however once the joint capsule is stretched the pain typically goes away and range of motion immediately increased. Following the procedure Range of motion stretches and exercises are recommended to ensure the joint does not revert.