Pain centred over the circle in the image that radiates down the front of the arm is often related to the long head of biceps. This is a long thin tendon that passes up from the biceps muscle passing along a groove in the top oof the humerus bone before attaching inside the shoulder joint at the top of the socket. As the shoulder is raised the bone groove moves aroung the tendon. If the tendon is swollen or damaged the tendon may catch in the groove producing pain that often shoots down the front of the arm. Steroid injections can ease the symptoms. Sometime surgery is required and can either involve cutting the tendon (Tenotomy) or cutting and reattching the tendon (tenodesis). Both techniques can be very very effective in treating the symptoms.
