The brachialis muscle is the main flexor of your elbow joint. If it harbours active trigger points, it can trigger pain at the base of your thumb, in your elbow or at the front of your shoulder.
As it is covered by the biceps brachii, this muscle is not known to many people. People who frequently overload it include fitness enthusiasts, guitar players or rock climbers. Still, anyone can experience trouble in this muscle.
When this muscle is too tense, or harbours trigger or tender points, it can impair the extension of your elbow. Furthermore, lifting or holding heavy objects with your arm in a flexed position may be painful. Of course, any pulling motion can be impaired or painful too.
Such activities may be