Ligamentum flavum

A key structure that connects adjacent vertebrae and contributes to spinal stability.

The ligamentum flavum is a series of yellow ligaments located in the spinal column. It runs between the laminae of adjacent vertebrae, providing support and maintaining the integrity of the spinal canal. Composed of elastic tissue, this ligament allows for flexibility while also protecting the spinal cord.

Terminologia Anatomica

ligamentum-flavum

System

Musculoskeletal system

Function

The primary function of the ligamentum flavum is to provide structural support to the spine and maintain its proper alignment. It helps to absorb shock during movement, particularly when bending or twisting the body. Additionally, its elasticity allows for the expansion and contraction necessary during spinal motion, helping to prevent injury by limiting excessive movement between vertebrae. Furthermore, in a standing position, the ligament supports the weight of the upper body, ensuring that the vertebral column remains stable yet flexible. This is crucial for mobility as well as for the protection of the spinal cord, which lies closely behind these ligaments.

Location

The ligamentum flavum is situated in the posterior portion of the vertebral canal, connecting the laminae of adjacent vertebrae. It can be found throughout the length of the spinal column, from the cervical region in the neck down to the lumbar region in the lower back. The ligament is particularly thick in the lumbar region, reflecting the greater mobility and impact the lumbar spine experiences. Its yellow color is attributed to the high elastin content, which enables it to stretch and recoil.

Did You Know?

The name 'ligamentum flavum' translates to 'yellow ligament' in Latin, due to its distinctive coloration.
Unlike most ligaments, which are primarily made of collagen, the ligamentum flavum is composed largely of elastic fibers.
In individuals with certain spinal conditions, such as spinal stenosis, the ligamentum flavum may thicken, contributing to nerve compression and pain.
The ligamentum flavum plays a crucial role during surgeries involving the spine, as surgeons must navigate around this ligament to prevent damage to surrounding structures.