Lumbar region

Lumbar Region

The lumbar region is a part of the vertebral column located in the lower back between the thoracic vertebrae and the sacral vertebrae. It is made up of five large, robust vertebrae designated as L1 to L5.

Anatomy

The lumbar region is characterized by its large, sturdy vertebrae. The vertebrae in the lumbar region are the largest of the vertebral column, reflecting their role in supporting most of the body's weight. Each lumbar vertebra consists of a large, round vertebral body designed to bear weight, and a vertebral arch which protects the spinal cord.

Function

The primary function of the lumbar region is to bear the weight of the body. The lumbar vertebrae also provide a point of attachment for many of the muscles of the lower back, contributing to movements such as bending and twisting. The lumbar region also protects the spinal cord and nerves that control the lower part of the body.

Clinical significance

Due to its weight-bearing function and its flexibility, the lumbar region is a common site of back pain. Conditions such as lumbar disc disease, lumbar spinal stenosis, and lumbar spondylosis can cause significant pain and disability. Treatment for these conditions can range from conservative management with physical therapy and medication to surgical intervention.

See also

• Vertebral column
• Thoracic vertebrae
• Sacral vertebrae
• Spinal cord