Fascia of Colles

Fascia of Colles

Cross-section through the middle of the forearm. (Deep fascia is labeled at center left.)

The Fascia of Colles is a significant anatomical structure in the human body, specifically within the anatomical region of the forearm. It is a part of the fascia, a band or sheet of connective tissue, primarily collagen, beneath the skin that attaches, stabilizes, encloses, and separates muscles and other internal organs.

Structure

The Fascia of Colles, also known as the deep fascia of the forearm, is a thick, fibrous band of connective tissue that wraps around the muscles of the forearm. It is continuous with the brachial fascia at the elbow and extends distally to the wrist, where it blends with the flexor retinaculum and extensor retinaculum.

The deep fascia of the forearm.

Function

The primary function of the Fascia of Colles is to provide a strong, supportive framework for the muscles of the forearm. It helps to keep the muscles in place and allows them to move smoothly against each other during muscle contraction and relaxation. Additionally, it serves as a conduit for nerves and blood vessels to pass through, ensuring proper communication and blood supply to the muscles.

Clinical significance

In certain medical conditions, such as compartment syndrome, the Fascia of Colles can become a significant factor. Due to its non-expandable nature, any swelling within the forearm can lead to increased pressure within the compartment, potentially leading to muscle and nerve damage.

See also

• Fascia
• Forearm
• Compartment syndrome