Infraspinous fascia

Diagram of the infraspinous fascia and surrounding structures.

The infraspinous fascia is a dense layer of connective tissue that covers the infraspinatus muscle, which is located in the shoulder region. This fascia is part of the deep fascia of the back and plays a crucial role in the movement and stabilization of the shoulder joint.

Anatomy

The infraspinous fascia is situated in the posterior aspect of the scapula, specifically covering the infraspinatus muscle, which occupies the infraspinous fossa. The fascia is continuous with the supraspinous fascia above and the deltoid fascia laterally. It is also connected to the spine of the scapula and the vertebral border of the scapula.

Function

The primary function of the infraspinous fascia is to provide a protective covering for the infraspinatus muscle. It also serves as a site of attachment for muscle fibers and helps to transmit the force generated by the muscle to the humerus. Additionally, the fascia contributes to the compartmentalization of the shoulder region, helping to maintain the structural integrity of the area.

Clinical Significance

Injury or inflammation of the infraspinous fascia can lead to pain and dysfunction in the shoulder. Conditions such as fasciitis or myofascial pain syndrome may involve the infraspinous fascia, leading to symptoms that can affect shoulder mobility and function. Treatment may involve physical therapy, massage, or other interventions aimed at relieving tension and restoring normal function.

Related Pages

• Infraspinatus muscle
• Supraspinous fascia
• Deltoid muscle
• Shoulder joint