Acupuncture for Shoulder Pain

By 11 months post injury, Mr. Rajah continues to have persistent right-sided shoulder pain. Despite a careful assessment and interventions that have included a power assist wheelchair to provide relative rest of the arms, reduction in use of the shoulder/ arms, and physiotherapy exercises. He wants to know if acupuncture would be helpful.
What evidence is there for acupuncture in treating shoulder pain post SCI?
1. There is level 4 evidence acupuncture reduces shoulder pain post SCI and level 1 evidence that it is no better than a psychological integration intervention.