Triceps tendon

A crucial structure that connects muscle to bone, enabling arm movements.

The triceps tendon is a fibrous connective tissue that attaches the triceps brachii muscle to the olecranon process of the ulna in the forearm. It plays a vital role in facilitating the extension of the elbow joint. The triceps tendon is a robust structure that withstands significant forces during activities such as pushing and throwing.

Terminologia Anatomica

tendo tricipitis

System

Musculoskeletal system

Function

The primary function of the triceps tendon is to facilitate the extension of the arm at the elbow joint. When the triceps brachii muscle contracts, it pulls on the triceps tendon, which in turn exerts force on the ulna. This action is crucial for various daily movements and activities, such as lifting objects, pushing, and performing sports actions requiring overhead motions. Additionally, the triceps tendon plays a role in stabilizing the elbow joint, ensuring proper alignment and function during both dynamic and static activities. Thanks to its anatomical position and composition, the triceps tendon efficiently transfers muscular force to the skeleton, allowing for powerful and coordinated movements of the upper limb.

Location

The triceps tendon is located at the posterior aspect of the elbow. It is the termination of the triceps brachii muscle, which spans the back of the upper arm and comprises three muscle heads: the long head, the lateral head, and the medial head. Upon reaching the elbow, these muscle heads converge into a single tendon that inserts onto the olecranon process, the bony prominence at the tip of the ulna. This strategic location allows the triceps tendon to effectively exert its force directly on the elbow joint, making it a pivotal element in arm extension.

Did You Know?

The triceps muscle is responsible for about 70% of the total muscle mass of the upper arm.
In addition to elbow extension, the long head of the triceps also assists in shoulder extension and adduction.
Triceps tendon injuries are common in athletes who frequently perform overhead motions, such as weightlifters and baseball pitchers.