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What Is Occipital Cervical Fusion?

Occipital cervical fusion, more commonly called occipitocervical fusion, is surgery that permanently stabilizes the junction between the skull and upper cervical spine. The operation connects the occipital bone to one or more cervical vertebrae with rigid fixation and bone graft. It is used when instability at the craniocervical junction threatens the spinal cord, brainstem, alignment, or ability to support the head safely. Because the fusion eliminates motion across the treated joints, patients permanently lose some movement at the upper neck.

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What Is Occipital Cervical Fusion?

Occipital cervical fusion, more commonly called occipitocervical fusion, is surgery that permanently stabilizes the junction between the skull and upper cervical spine. The operation connects the occipital bone to one or more cervical vertebrae with rigid fixation and bone graft. It is used when instability at the craniocervical junction threatens the spinal cord, brainstem, alignment, or ability to support the head safely. Because the fusion eliminates motion across the treated joints, patients permanently lose some movement at the upper neck.

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Why Is Occipital Cervical Fusion Performed?

The procedure is performed for craniocervical instability caused by trauma, congenital abnormalities, inflammatory disease, tumor, infection, or severe deformity. Conditions such as basilar invagination, atlantoaxial instability, rheumatoid destruction, and selected upper-cervical fractures can require fusion when stability cannot be restored with a shorter construct. Symptoms can include severe neck pain, myelopathy, weakness, numbness, gait problems, or signs of brainstem or spinal-cord compression. Surgical planning considers neurologic compression, bone quality, vertebral-artery anatomy, alignment, and the lowest cervical level that must be included to create a stable construct.

How Is Occipital Cervical Fusion Performed?

The surgeon approaches the back of the skull and upper cervical spine and exposes the occiput and planned cervical fixation levels. An occipital plate is attached to the skull and connected with rods to screws placed in the upper cervical vertebrae, commonly including C2 and sometimes additional levels below. Bone surfaces are prepared and bone graft is placed along the construct to promote permanent fusion. In selected patients, decompression of the brainstem, spinal cord, or upper cervical nerves is performed during the same operation.

What Is Recovery Like After Occipital Cervical Fusion?

Patients are monitored after surgery for neurologic function, swallowing, airway status, wound healing, pain, and stability of the construct. Walking and basic activity begin as tolerated, while lifting and strenuous neck activity are restricted during early healing. Neck rotation and flexion-extension are permanently reduced because the skull and fused cervical levels no longer move independently. Follow-up imaging checks alignment, screw and rod position, and development of solid bone fusion over the following months.

What Are the Risks and Complications?

Possible complications include infection, cerebrospinal fluid leak, neurologic injury, nonunion, screw loosening, rod breakage, and the need for revision surgery. Vertebral-artery injury is a recognized risk because major vessels pass close to the upper cervical fixation sites. Poor fusion alignment can narrow the pharyngeal space and contribute to dysphagia or breathing problems. Dural injury, wound problems, adjacent-level degeneration, and persistent pain can also occur.

Frequently Asked Questions About Occipital Cervical Fusion

What part of the spine is fused during occipital cervical fusion?

The skull is fused to the upper cervical spine, commonly to C2 and sometimes to additional cervical levels when more extensive stabilization is required.

Will neck motion decrease after occipitocervical fusion?

Yes. Motion at the fused craniocervical joints is permanently lost, so patients notice reduced ability to rotate, flex, and extend the upper neck.

Why is alignment important during occipitocervical fusion?

The fixation angle affects both spinal alignment and the space behind the mouth and throat. Excessive flexion can contribute to postoperative swallowing or airway problems.

Can the hardware fail after occipitocervical fusion?

Yes. Screw loosening, rod breakage, or other instrumentation problems can occur, particularly if solid bone fusion does not develop.

References

Pedicle Subtraction Osteotomies for Surgical Correction of Fixed Sagittal Imbalance: A Meta-Analysis and Systematic Review. PubMed. https://pubmed.ncbi.nlm.nih.gov/38904379/. Date Accessed September 11, 2026.

Spinal osteotomies: indications, limits and pitfalls. PubMed. https://pubmed.ncbi.nlm.nih.gov/28507779/. Date Accessed September 11, 2026.

Neurologic complications of lumbar pedicle subtraction osteotomy: a 10-year assessment. PubMed. https://pubmed.ncbi.nlm.nih.gov/17873818/. Date Accessed September 11, 2026.

Pedicle Subtraction Osteotomy in the Revision Versus Primary Adult Spinal Deformity Patient: Is There a Difference in Correction and Complications? PubMed. https://pubmed.ncbi.nlm.nih.gov/26730526/. Date Accessed September 11, 2026.

Perioperative Complications of Pedicle Subtraction Osteotomy. PubMed. https://pubmed.ncbi.nlm.nih.gov/27781181/. Date Accessed September 11, 2026.