By Aubrey Gowing
Like many intriguing stories this one begins with the reveal. The seemingly innocent bicep is thought of primarily as an arm mover. Indeed its role in elbow flexion rather than shoulder flexion is most responsible for biceps calamitous effect on humeral head position; not the most obvious suspect for shoulder impingement. So keep the bicep in the back of your mind as we discuss the other suspects implicated in shoulder pain.