Journal of Bodywork and Movement Therapies via ScienceDirect

The aim of this case series was to investigate changes in pain and pressure pain sensitivity after manual treatment of active trigger points in the shoulder muscles in individuals with unilateral shoulder impingement. In conclusion, this case series has shown that manual treatment of active muscle TrPs can help to reduce shoulder pain and pressure sensitivity in shoulder impingement. Current findings suggest that active TrPs in the shoulder musculature may contribute directly to shoulder complaint and sensitization in patients with shoulder impingement syndrome, although future randomized controlled trials are required.

Abstract avaible here.