Lumbosacral ligament

Lumbosacral ligament is a ligament in the human body that connects the lumbar spine to the sacrum. It is a part of the anterior longitudinal ligament that runs down the anterior surface of the vertebral bodies.

Anatomy

The lumbosacral ligament is a thickened part of the anterior longitudinal ligament that connects the fifth lumbar vertebra to the first segment of the sacrum. It is located in the lower back region, also known as the lumbar region of the spine. The ligament is strong and broad, providing stability and support to the lumbosacral junction.

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Lumbosacral ligament in relation to the lumbar spine and sacrum

Function

The primary function of the lumbosacral ligament is to provide stability to the lumbosacral junction, which is the area where the lumbar spine meets the sacrum. This is an important function as this area of the spine bears a significant amount of the body's weight and is subject to a lot of movement and stress. The lumbosacral ligament helps to prevent excessive movement in this area, reducing the risk of injury and conditions such as spondylolisthesis and spondylolysis.

Clinical significance

Damage or injury to the lumbosacral ligament can lead to lower back pain and instability in the lumbosacral junction. This can be caused by a variety of factors, including trauma, degenerative conditions, and overuse. Treatment for lumbosacral ligament injuries typically involves physical therapy, medication, and in some cases, surgery.

See also

• Lumbar vertebrae
• Sacrum
• Anterior longitudinal ligament
• Lumbosacral junction