The supinator runs between the bones the radius and ulna in the forearm. It supinates your forearm, turning it palm up. The opposite of this pattern is pronation, rotating the forearm so that your palm faces downward. The causes, [...]
The extensors of the fingers include extensor indicis, extensor digitorum, and extensor digiti minimi. Collectively they extend all four fingers of the hand at the knuckle and finger joints. They are grouped together here because their location, function, and [...]
The extensors of the hand and the wrist include extensor carpi ulnaris, extensor carpi radialis longus, and extensor carpi radialis brevis. All three run most of the length of the forearm. Collectively, along with brachioradialis, they extend the hand [...]
The brachioradialis runs from the lower, front part of the upper arm, across the elbow to the middle of the forearm. It flexes the forearm at the elbow. It is also capable of both pronation and supination, depending on the position of the forearm. Brachioradialis [...]
The triceps brachii (three-headed upper arm) muscle is a large muscle of the back of the upper arm. It is the primary muscle used for elbow extension (straightening the arm). Trigger points occur in all three heads but referred [...]
