Subacromial Corticosteroid Injection on Poststroke Hemiplegic Shoulder Pain: A Randomized, Triple-Blind, Placebo-Controlled Trial

Make sure your doctor and therapists know about this. When I had my shoulder pain no one knew what to do about it except don't use it.
http://www.naric.com/research/rehab/record.cfm?search=2&type=all&criteria=J64041&phrase=no&rec=119121

Abstract: Study evaluated the effect of subacromial corticosteroid injection on hemiplegic shoulder pain. Fifty-eight stroke survivors with evidence of rotator cuff disorder were randomly assigned to receive ultrasound-guided subacromial injection with triamcinolone 40mg (treatment group), or lidocaine (placebo group). After a single injection, participants were followed up for 8 weeks. Treatment efficacy was evaluated at pretreatment and weeks 2, 4, and 8 posttreatment with the following measures: visual analog scale (VAS) of the average shoulder pain level at day and night, Modified Barthel Index, Shoulder Disability Questionnaire (SDQ), and angles of shoulder active range of motion (flexion, abduction, external rotation, and internal rotation). There was no significant difference between the 2 groups in the main outcome measures at pretreatment. Compared with the placebo group, VAS-day/night, SDQ, flexion, external rotation, and internal rotation showed significant improvement in the treatment group. Results indicate that subacromial corticosteroid injection showed improvement in pain, disability, and active range of motion, and the duration of its efficacy continued up to 8 weeks.