Cervical Spine Surgery

Surgery in the cervical spine may be recommended to treat problems in the neck, such as misalignment, compressed nerves, and/or spinal cord abnormalities. 

The most common reasons for cervical spine surgery are to:

• Remove parts of the bone or disc that are causing nerve pain
• Fuse adjacent vertebrae together to create stability
• Widen the spinal canal to relieve spinal cord compression
• Remove tumors or masses
• Some combination of the above reasons

The most common type of neck surgery is ACDF, which is the acronym for anterior cervical discectomy and fusion.

The C5-C6 and C6-C7 spinal motion segments are common levels in the neck to require surgical intervention.^,

Goals of Cervical Spine Surgery

Neck surgery is usually done to relieve symptoms caused by one of two types of pathologies:

1. Spinal cord compression in the neck, also called cervical spondylotic myelopathy
2. Spinal nerve root compression in the neck, also called cervical radiculopathy 

The specific surgical objectives are tailored for each patient based on the location and nature of the anatomic abnormality.

For example, surgery to treat nerve pain from cervical degenerative disc disease focuses on relieving pain and nerve pressure, while surgery to treat spinal cord compression focuses on restoring function and preventing further damage.

The goals of most cervical spine surgeries are to:

• Alleviate neck and/or arm pain 
• Maintain spinal stability
• Improve spine alignment
• Preserve neck mobility and range of motion

In some cases, cervical surgery is done to revise a previous failed surgery and achieve better outcomes.

Types of Cervical Spine Surgery

There are 3 types of neck surgery:

1. Decompression: This technique is done to “decompress” the spinal cord or nerves in the neck by removing a piece of bone, disc, or other structure compressing the neural tissue.
2. Fusion: This surgery corrects instability in the cervical spine through fusion, which sets up the process for a solid bony bridge to form between the vertebrae.
3. Disc replacement: This surgery removes the entire damaged disc and replaces it with an artificial disc implant.

Decompression and fusion procedures are often combined in an ACDF surgery, where fusion is done alongside the decompression to prevent destabilization of the cervical spine. Spinal instrumentation (such as a small plate and screws) is used to add stability to the fused spinal construct.

Decompression and disc replacement surgeries preserve the spine’s natural motion, while fusion surgery immobilizes the spinal segment. 

When Cervical Spine Surgery Is Recommended

Common indications for neck surgery include:

• Persistent or recurrent arm pain and/or numbness unresponsive to non-surgical treatment for at least 6 months^,,
• Progressive neurological deficits, particularly definitive motor weakness
• Magnetic resonance imaging (MRI) or other imaging findings that correlate with and confirm the patient's signs and symptoms

Cervical spine surgery is generally elective, meaning that it is the patient's decision to have surgery or to continue with nonsurgical treatments. 

Conditions such as spinal tumors, traumatic injury from a fall or motor vehicle accident, and/or acute injury to the spinal cord usually necessitate immediate medical attention and possible surgical intervention. 

Conditions Treated with Cervical Spine Surgery

Neck surgery is recommended in the treatment of a number of traumatic, mechanical, and/or degenerative conditions, including:

• Cervical degenerative disc disease
• Cervical facet joint degeneration 
• Cervical herniated discs
• Cervical stenosis with myelopathy
• Cervical spondylolisthesis
• Spondylosis
• Ligament ossification, such as ossified posterior longitudinal ligament (OPLL)
• Traumatic instability of the cervical spine
• Spinal tumors

The surgery is approached from the front (anterior approach) or back (posterior approach). In rare cases, a combined anterior-posterior approach is used. 

In general, where possible, most surgeons favor an anterior approach.

Cervical Spine Surgery: Anterior Approach

A front approach provides direct access to the cervical disc and other anatomical structures in the front of the neck. Potential advantages of the anterior cervical approach include:

• Direct visualization and access to anterior cervical pathology
• Minimal damage to neck muscles since no muscles attach to the midline front surface of the cervical vertebral body

An anterior cervical approach risks injuring delicate anatomical structures such as the recurrent laryngeal nerve, esophagus, and major blood vessels in the front of the neck.

When an anterior cervical approach is considered

Good candidates for anterior cervical surgery typically include cases where:

• The pathology is limited to 3 disc levels or less
• Spinal fusion and/or corpectomy (removal of the vertebra and disc) procedures are required

In general, patients with anterior cervical lesions such as bone spurs or disc herniations causing radiculopathy or myelopathy are considered for anterior surgery.

Types of cervical spine surgery approached from the front

Common surgeries approached from the front of the neck include:

• Anterior cervical discectomy with fusion (ACDF)
• Anterior cervical corpectomy with fusion (ACCF)
• Cervical artificial disc replacement

Research indicates that ACDF and cervical artificial disc replacement are the most widely performed surgeries for treating a range of cervical spine conditions.^,

Cervical Spine Surgery: Posterior Approach

Accessing the neck from the back allows the surgeon to directly visualize the spinal canal, spinal ligaments, and posterior disc herniation.  

When a posterior cervical approach is considered

Surgical approach from the back of the neck is suited for treating:

• Posterior lesions, such as ligament ossification or thickened lamina, compressing the spinal cord or nerve roots
• Pathology extending beyond 3 vertebral levels
• Ossification of the posterior longitudinal ligament (OPLL) with widespread dural ossification
• Extensive spinal stenosis that spans multiple levels or narrowing of the whole spinal canal

The selection of a posterior approach is usually based on the surgeon’s preference and experience, along with the patient’s anatomic characteristics.

Types of cervical spine surgery approached from the back

Common neck surgeries approached from the back include:

• Posterior cervical decompression surgery
• Posterior cervical decompression and fusion
• Posterior cervical laminectomy
• Posterior cervical foraminotomy
• Posterior cervical laminoplasty

The posterior approach also enables circumferential decompression when combined with anterior surgery for severe OPLL and dural ossification.

Sometimes, two surgeries are done at the same time, for example, when cervical laminotomy and foraminotomy are done together, the surgery is called posterior cervical laminoforaminotomy.

Cervical Spine Surgery Is Becoming More Routine

With technological advancements, many cervical surgeries are now performed through minimally invasive techniques.

These techniques involve smaller incisions and less tissue disruption. When minimally invasive techniques are used, the surgery is typically associated with:

• Shorter hospital stays
• Less post-surgical pain
• Less blood loss
• Faster recovery 

Additionally, there is a greater chance of surgery being performed on an outpatient basis, with patients returning home on the same day as surgery.