The triceps brachii muscle attaches to the olecranon process of the ulna crossing the posterior side of the elbow joint. that will allow the triceps to be an <u>Extensor </u>of the elbow joint.
Directly affected is the common extensor tendon, which arises from the lateral epicondyle of the elbow.
The common extensor tendon is made up of the extensor carpi radialis brevis (ECRB) and longus, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris.
The main elbow flexors are the biceps brachii, brachialis, and brachioradialis.
The main elbow extensor is the triceps brachii. Although it is also believed that the anconeus contributes to elbow extension.
The proximal articular region of the ulna is called the olecranon. It creates the larger sigmoid notch, which articulates with the humerus to allow for elbow flexion and extension, together with the coronoid process.
The main point of attachment for the forearm's extensor muscles is the common extensor tendon. This promotes forearm supination and allows finger extension.
In some skeletal muscles, the
fascicles form a common angle with the tendon. These skeletal muscles are known
as Pennate muscles (also called pinnate muscles or penniform muscles). Generally,
these types of muscles allow higher force production but smaller range of
motion.
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