Pain in elbow from armwrestling movements is nothing new. We all have experienced different kind of pain in elbow joint sometimes it`s tendons but sometimes its one or many of muscles involved in movement. With this video we are starting series that focus on things that could cause pain in elbow. Today we are talking about muscle named Pronator Teres. it`s main function is to pronate arm and flex elbow. Sometimes from all pronation and elbow flexion this muscle can get tight and shorten what you need to do is to release it with trigger point active release techniques. you need to release it. It can cause pain in medial epicondylus and in muscles surrounding your elbow, also numbness in fingers. All symptomes can cause something called Pronator Teres Syndrome.
Pronator teres syndrome
Pronator teres syndrome is a compression neuropathy of the median nerve at the elbow. It is rare compared to compression at the wrist (carpal tunnel syndrome) or isolated injury of the anterior interosseous branch of the median nerve (anterior interosseous syndrome).
The most common cause is entrapment of the median nerve between the two heads of the pronator teres muscle. Other causes are compression of the nerve from the fibrous arch of the flexor superficialis, or the thickening of the bicipital aponeurosis.
The median nerve passes through the cubital fossa and passes between the two heads of pronator teres muscle into the forearm. It then runs between flexor digitorum superficialis and flexor digitorum profundus muscles and enters the hand through the carpal tunnel.
Pronator Teres Muscle
The pronator teres has two heads—humeral and ulnar.
- The humeral head, the larger and more superficial, arises from the medial supracondylar ridge immediately superior to the medial epicondyle of the humerus, and from the common flexor tendon (which arises from the medial epicondyle).
- The ulnar head is a thin fasciculus, which arises from the medial side of the coronoid process of the ulna, and joins the preceding at an acute angle.
The muscle passes obliquely across the forearm, and ends in a flat tendon, which is inserted into a rough impression at the middle of the lateral surface of the body of the radius, just distal to the insertion of the supinator.
Arm Wrestling Muscle
Take a look at the following picture of two men arm wrestling, paying close attention to the position of the forearm of the person who is winning this match.
What Does the Pronator Teres Do?
The name of the pronator teres gives away its function. Pronation refers the inward rotation of a body part towards the middle of the body. Since the pronator teres is located in the forearm, its function is to rotate (pronate) the forearm inward. Think back to the arm wrestling example from the beginning of the lesson; an arm wrestler must internally rotate (pronate) their forearm in order to pin the arm of their opponent.
The pronator teres is not only used during arm wrestling; this muscle is used hundreds of times each day. Performing simple tasks like brushing your teeth, combing your hair, and eating all require forearm pronation, and therefore require the use of the pronator teres. The pronator teres also functions to flex the forearm, which involves bending the arm at the elbow joint.