Spine Anatomy

Overview

Radicular pain highlighted in the cervical spine with man standing upright

Radiculopathy, Radiculitis and Radicular Pain

Medical illustration showing conditions that may occur in the cervical spine. Degenerative disc disease, facet joint osteoarthritis, herniated disc, and spinal stenosis are labeled.

All About the C5-C6 Spinal Motion Segment

Cervical Spinal Nerves

Cervical Spine Anatomy

Posterior view of the lower back highlighting the lumbar spine.

Understanding Lower Back Anatomy

Posterior view of the buttocks labeling the piriformis muscle, S1, S2, and sciatic nerve.

Piriformis Muscle: Blood Supply and Innervation

Posterior view of the upper body highlighting the spine

Spinal Anatomy and Back Pain

Posterior view of the lower back and pelvis highlighting low back pain.

Back Muscles and Low Back Pain

Lumbar Vertebrae showing nucleus pulposus, annulus fibrosis, cartilaginous endplates

Lumbar Vertebrae

Spinal Cord and Cauda Equina of the Lumbar Spine

Highlighting T12-L1 spinal segment level in the spine.

All About T12-L1 (Thoracolumbar Junction)

Illustration highlighting the c1 c2 vertebrae in the cervical spine.

The C1-C2 Vertebrae and Spinal Segment

Medical illustration of the spinal cord and nerves in the cervical spine

Spinal Cord Anatomy in the Neck

Transparent skull and upper body with the cervical spine highlighted.

Cervical Vertebrae

Medical illustration of the cervicothoracic junction that occurs between the C7 and T1 vertebrae

All About the C7-T1 Spinal Segment (Cervicothoracic Junction)

Posterior view of the piriformis muscle in the buttocks.

Anatomy of the Piriformis Muscle

Anterior view of the lumbar spine labeling L4, and L5.

All About the L4-L5 Spinal Segment

Lumbar spine showing spinal cord nerve roots.

Spinal Cord and Spinal Nerve Roots

Posterior view of the back highlighting the lumbar spine

Lumbar Spine Anatomy and Pain

Soft Tissues of the Lumbar Spine

Medical illustration of the torso and upper legs. The thighs are highlighted in red to indicate pain

Sciatic Nerve: Muscle Innervation and Function

Posterior view of the upper back highlighting the thoracic vertebrae

Thoracic Spine Anatomy and Upper Back Pain

Medical illustration of the cervical spine, the C6-C7 vertebrae are highlighted

All About the C6-C7 Spinal Motion Segment

Illustration of anatomy of cervical spine muscles

Neck Muscles and Other Soft Tissues

Skeletal view of the lumbar spine with L5 and S1 highlighted

All about L5-S1 (Lumbosacral Joint)

Anterior view of the sacroiliac joints in the pelvis

Sacroiliac Joint Anatomy

Anatomy of Lumbosacral Joint L5-S1 Infographic

Anterior view of two vertebrae showing the disc between them.

Spinal Discs

An adult pelvis showing tendons of muscles.

Soft Tissues and Essential Functions of the Coccyx

Medical illustration showing the lumbar nerve roots coming out of the spinal cord

Lumbar Spinal Nerves

Posterior view of the body highlighting the sciatic nerve in the leg.

Sciatic Nerve Anatomy

Anatomy Of Nerve Pain

Illustration of vertebrae in the cervical spine

All About the C2-C5 Spinal Motion Segments

Anterior view of two vertebrae showing the disc between them.

Cervical Discs

Anterior view of lumbar spine labeling L3-L4 disc, L4-L5 disc, and L5-S1 disc.

All About the L3-L4 Spinal Segment

Anterior view of the pelvis highlighting the Iliolumbar ligament, anterior sacroiliac ligament, sacrotuberous ligament, and sacroiliac joint.

Sacroiliac Joint Ligaments and Muscles

Infographic Showing the Functions of the Spine

Functions of the Spine Infographic

Vertebral column comparing shapes of cervical, thoracic, and lumbar vertebra.

Vertebrae in the Vertebral Column

Anterior view of the pelvis labeling the lumbar spine, sacrum, and tailbone.

Sacrum (Sacral Region)

Medical illustration of the lumbar spine. The L3-L4, L4-L5, and L5-S1 discs between the vertebrae are labeled

Lumbar Discs

Posterior view of the pelvis highlighting the coccyx.