Anatomy of the Deep Back

Vertebral Column Overview

• The lumbar region has the highest number of vertebrae, consisting of five individual lumbar vertebrae (L1-L5).
• The coccygeal region typically contains four coccygeal segments, but this can vary between three to five segments in different individuals.

Accessory Ligaments of the Vertebral Column

• Accessory ligaments of the vertebral column include the ligamentum flavum, interspinous ligaments, and supraspinous ligaments, supporting the spine and maintaining stability.

Intrinsic Back Muscles

• The intrinsic (deep) back muscles are located mainly in the lumbar, thoracic, and cervical regions, helping with posture, movement, and spinal support.

Suboccipital Region

• The suboccipital region is located at the posterior part of the neck, beneath the occipital bone, and includes muscles that control head movements and stability of the atlanto-occipital joint.