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The Spine

Regions of the Spine Spine Anatomy: Regions of the Spine

Regions of the SpineThere are 33 vertebrae (bones) in the spine. Anatomically, the spine is divided into four regions:

  • The top seven vertebrae that form the neck are called the cervical spine and are labeled C1-C7.
  • The upper back, or thoracic spine, has 12 vertebrae, labeled T1-T12.
  • The lower back, or lumbar spine has five vertebrae, labeled L1-L5.
  • The sacrum and coccyx (tailbone) are made up of nine vertebrae that are fused together to form a solid bone. The sacrum is labeled S1.

Curves of the Spine

When viewed from the front or back, the normal spine is in a straight line, with each vertebra sitting directly on top of the other. A side-to-side curve in the spine is called a scoliosis.

When viewed from the side, the normal spine has three gradual curves:

  • The neck has a lordosis; it curves toward the back.
  • The thoracic spine has a kyphosis; it curves toward the front.
  • The lumbar spine also has a lordosis.

These curves help the spine to support the load of the head and upper body, and maintain balance in the upright position.

The Spine

  • Spine Surgery
  • Spine Conditions
    • Cauda Equina Syndrome
    • Chiari Malformation
    • Degenerative Disc Disease
    • Facet Joint Syndrome
    • Herniated Disc
    • Kyphosis
    • Lateral Recess/Foraminal Stenosis
    • Myelopathy
    • Piriformis Syndrome
    • Radiculopathy
    • Sacroiliac Joint Dysfunction
    • Sciatica
    • Spondylolisthesis
    • Spondylolysis
    • Stenosis
    • Strains and Sprains
    • Trauma
    • Tumors
    • Vertebral Compression Fractures
    • Whiplash
  • Spine Anatomy
    • Regions of the Spine
    • Vertebrae
    • Intervertebral Discs
    • Spinal Cord and Nerve Roots
  • Spine Treatments
    • Creating Success for our Patients
    • Minimally Invasive Spine Surgery (MIS)
    • New Surgical Imaging Systems
  • Treatment Options
    • NECK (CERVICAL)
    • Anterior Cervical Discectomy with Fusion (ACDF)
    • Cervical Disc Arthroplasty
    • Cervical Corpectomy
    • Cervical Foraminotomy
    • Cervical Laminectomy
    • Cervical Laminoplasty
    • LOWER BACK (LUMBAR)
    • Anterior Lumbar Interbody Fusion (ALIF)
    • Balloon Kyphoplasty
    • Direct Lateral Interbody Fusion (DLIF)
    • Lumbar Laminectomy
    • Minimally Invasive Lumbar Discectomy
    • Posterolateral Lumbar Fusion
    • Spinal Decompression
    • Spinal Fusion
    • Transforaminal Lumbar Interbody Fusion (TLIF)
    • X-Stop® Spacer
SONSA Common Disorders

CommonNeurosurgicalDisordersSee List

CommonSpine DisordersSee List

SONSA Neurosurgery

What is Neurosurgery

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SONSA Specialities

SONSA Specialities:

Skull Based Surgery

Spinal Surgery Complex and Minimally invasive (MAST)

Stereotactic Radiosurgery Consulations

Peripheral Nerve Surgery

SONSA Patient Outcomes

Why ArePatient Outcomes Important?

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  • Services
    • Neurosurgical
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    • Surgical and Support Team
    • Miroslav P. Bobek, M.D.
    • David H. Walker, M.D.
    • Timothy D. Uschold, M.D.
    • Kathryn Wagner, M.D.
  • Neurosurgery
    • What is Neurosurgery?
    • Neurosurgical Conditions
    • Peripheral Nerves
  • Spine
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