Supraspinous ligament

A strong band of fibrous connective tissue that runs along the spine, connecting the tips of the spinous processes.

The supraspinous ligament is a vital component of the spinal column, providing support and stability to the vertebral structure. It extends from the seventh cervical vertebra (C7) all the way down to the sacrum, functioning to limit excessive flexion of the spine. This ligament serves as a healthy connection between adjacent spinous processes, ensuring the integrity of the spinal column during movement.

Terminologia Anatomica

ligamentum supraspinale

System

Musculoskeletal system

Function

The primary function of the supraspinous ligament is to prevent excessive forward bending of the spine, thereby protecting the spinal cord and surrounding tissues from injury. By acting as a tension-bearing structure, it helps maintain the proper alignment of the vertebral column during various activities, including lifting, bending, and twisting. This ligament also serves as an attachment site for muscles and fascia that play a crucial role in posture and spinal stability. Additionally, the supraspinous ligament contributes to proprioception, allowing the body to sense the position of the spine and adjust movements accordingly, enhancing coordination and balance.

Location

The supraspinous ligament is located along the posterior aspect of the vertebral column, specifically along the tips of the spinous processes. It begins at the base of the skull, with the attachment at C7 being the most prominent, and extends down to the sacrum at the lower end of the spine. Along its course, it connects to the spinous processes, which are bony protrusions that can be felt through the skin of the back. This ligament lies superficial to other supporting structures of the spine, such as the interspinous ligaments and the ligamentum flavum, playing a crucial role in the overall structural integrity of the spine.

Did You Know?

The supraspinous ligament can be damaged due to trauma or repetitive stress, potentially leading to pain or instability in the spine.
In some individuals, variations in the thickness and strength of the supraspinous ligament can be observed, which may affect spinal health.
The ligament is often used as a landmark during spinal surgeries, assisting surgeons in identifying the surrounding anatomical structures.