What Is Mobi-C Cervical Disc Replacement?

Mobi-C is an artificial cervical disc implant used in cervical disc replacement surgery. The cervical spine consists of seven vertebrae in the neck, with discs between them that cushion the bones and help the neck bend, turn, and move.

When a cervical disc becomes damaged or degenerates, it may contribute to pressure on a nearby nerve root or the spinal cord. Depending on the location and severity of the problem, symptoms can include neck pain, pain traveling into an arm, tingling, numbness, or weakness.

During Mobi-C surgery, the surgeon removes the affected disc and places the artificial disc in the space between the vertebrae. The implant is designed to maintain disc height while allowing movement at the treated level.

Mobi-C is not appropriate for every person with neck pain or a herniated disc. A spine surgeon must review the diagnosis, imaging, symptoms, and individual anatomy to determine whether artificial disc replacement is a reasonable option.

How Does the Mobi-C Artificial Disc Work?

The Mobi-C implant has two metal endplates and a polyethylene insert between them. The components are designed to allow controlled movement as the neck moves.

The implant is placed in the space left after the damaged disc is removed. Its design allows movement in more than one direction, including sliding and rotation, with the aim of supporting motion similar to that of a natural cervical disc.

The goal is to address the damaged disc and any relevant nerve compression while preserving motion at the treated level. Actual results depend on the patient's condition, the surgical procedure, and healing.

What Symptoms May Lead to Cervical Disc Replacement?

A damaged cervical disc can sometimes press on a nerve root or the spinal cord. The resulting symptoms depend on which structures are affected.

Neck pain

Some patients experience pain or stiffness in the neck. However, neck pain alone does not automatically mean a damaged disc is the cause or that surgery is necessary.

Arm pain that starts in the neck

Cervical nerve irritation can cause pain that travels from the neck into the shoulder, arm, or hand. This pattern is commonly associated with cervical radiculopathy.

Read more about spine and neck conditions that may cause radiating pain or neurological symptoms.

Numbness, tingling, or weakness

Pressure on a cervical nerve may lead to changes in sensation or strength in the arm or hand. Symptoms vary depending on the affected nerve and the severity of compression.

Symptoms related to spinal cord compression

When the spinal cord is compressed, some people develop symptoms involving coordination, balance, hand dexterity, or walking. These symptoms require medical assessment and should not be ignored.

Who May Be a Candidate for Mobi-C?

Mobi-C is intended for selected adults with certain cervical disc conditions. Eligibility depends on the device's approved indications, the patient's symptoms and imaging, and whether disc replacement is appropriate for the individual's anatomy and health.

The manufacturer's patient information describes use for replacing one or two adjacent damaged cervical discs within the indicated C3–C7 levels. Patients may have arm pain or neurological symptoms such as numbness or weakness, with or without neck pain.

Your surgeon may evaluate:

• Imaging findings: MRI, CT, or X-rays may show a herniated disc, degenerative changes, or loss of disc height.
• Neurological symptoms: Arm pain, numbness, tingling, or weakness may help identify the affected nerve or spinal level.
• Previous treatment: The surgeon considers what nonsurgical treatments have been tried and whether symptoms have persisted.
• Bone health: Bone density and other health factors can affect implant suitability.
• Spinal anatomy: The condition of the facet joints, alignment, and degree of degeneration can influence whether disc replacement is appropriate.
• Overall health: Medical history, medications, prior surgery, and other individual factors are considered.

Some patients may be better suited for ACDF or another treatment. Significant facet joint degeneration, certain forms of instability or deformity, poor bone quality, infection, and other factors may make artificial disc replacement unsuitable.

A consultation helps determine whether the symptoms and imaging findings support surgery and which procedure may best address the problem.

Mobi-C vs. ACDF: What Is the Difference?

ACDF stands for anterior cervical discectomy and fusion. It is a commonly used operation that removes a damaged cervical disc and uses a spacer or bone graft, often with additional fixation, to help the adjacent vertebrae fuse together.

Mobi-C also replaces a damaged disc, but it is designed to preserve motion rather than fuse the treated vertebrae.

Neither procedure is automatically the better choice for every patient. Clinical research has compared cervical disc replacement with ACDF in appropriately selected patients, including long-term studies of Mobi-C. The findings support disc replacement as an option for eligible patients, but individual results vary and research outcomes do not guarantee a particular result.

Your surgeon should explain why one procedure is recommended over the other based on your diagnosis, imaging, anatomy, and treatment goals.

What Happens During Mobi-C Surgery?

Mobi-C implantation is performed under general anesthesia. The surgeon accesses the cervical spine through an incision at the front of the neck.

Step 1: Positioning and preparation

The patient is positioned on their back. The surgical team prepares the neck and uses imaging to confirm the appropriate spinal level.

Step 2: Reaching the cervical spine

Through an incision at the front of the neck, the surgeon carefully moves the relevant tissues aside to reach the targeted disc space.

Step 3: Removing the damaged disc

The affected disc is removed. The surgeon may also address bone spurs or other tissue contributing to pressure on the spinal cord or nerve roots, depending on the findings.

Step 4: Placing the artificial disc

The surgeon prepares the disc space and places the appropriately sized Mobi-C implant. Imaging is used to help verify positioning.

Step 5: Recovery and monitoring

After the procedure, the patient is monitored as they recover from anesthesia. The care team evaluates pain control, swallowing, movement, and neurological status before discharge instructions are provided.

The precise surgical plan and postoperative care vary by patient and by the number of levels treated.

What Are the Potential Benefits of Mobi-C?

For appropriately selected patients, cervical disc replacement may offer several potential benefits.

• Motion preservation: The implant is designed to allow movement at the treated cervical level.
• Nerve decompression: Removing a damaged disc and addressing compressive tissue can help relieve pressure on affected nerves or the spinal cord.
• Disc-height restoration: The implant helps maintain the space between the vertebrae.
• An alternative to fusion: Disc replacement may be an option for eligible patients who need surgical treatment but may benefit from preserving movement.
• Potential longer-term advantages: Research has evaluated outcomes such as pain, function, and additional surgery compared with fusion in selected patients.

These are potential benefits, not guarantees. Mobi-C may not be suitable for all cervical disc conditions, and it does not eliminate the possibility of ongoing symptoms, complications, or future surgery.

What Are the Risks and Complications?

Although cervical disc replacement may be appropriate for selected patients, it is still surgery and carries risks. Your surgeon should discuss the risks that apply to your medical history and treatment plan.

• Infection or wound-healing problems: These can occur after any operation.
• Bleeding or blood vessel injury: The anterior approach passes near important structures in the neck.
• Swallowing or voice changes: Temporary difficulty swallowing or voice changes can occur after anterior neck surgery; some complications may persist.
• Nerve or spinal cord injury: Neurological complications may result in pain, numbness, weakness, or other changes.
• Implant-related complications: The artificial disc may move, wear, loosen, or fail, or other device-related problems may develop.
• Bone or joint changes: Bone growth around the implant or degeneration of the facet joints may affect movement or symptoms.
• Persistent or recurrent symptoms: Surgery may not fully resolve the original problem, and new symptoms can occur.
• Additional surgery: Some patients require further treatment or revision surgery.

The risks depend on the individual patient, the number of levels treated, the anatomy, and other health factors. Ask your surgeon to explain the risks and benefits of Mobi-C compared with ACDF or other reasonable alternatives.

What Is Recovery Like After Mobi-C Surgery?

Recovery varies from person to person. It depends on the number of levels treated, overall health, the severity of the original condition, and the body's response to surgery.

Immediately after surgery

The care team monitors the patient in recovery and checks pain, swallowing, movement, and neurological function. Some patients are discharged relatively quickly, while others may need an overnight stay or additional monitoring.

Managing the incision and activity

You will receive instructions for wound care, medication use, and activity. Follow the surgeon's guidance about showering, driving, lifting, and returning to normal neck movement. A collar may be recommended in some cases.

Returning to daily activities

Your surgeon will advise when you can return to work, exercise, driving, and other daily activities. Physical therapy may be recommended depending on your recovery and clinical needs.

Follow-up appointments

Follow-up visits allow the care team to assess the incision, symptoms, neurological function, and implant position. Attend these appointments and report new or worsening symptoms.

Questions to Ask Your Spine Surgeon

If you are considering Mobi-C, these questions can help you understand whether the procedure fits your needs.

• What is causing my neck or arm symptoms?
• Which disc level or levels are affected?
• Would cervical disc replacement or ACDF be more appropriate for me, and why?
• Am I a candidate for one-level or two-level Mobi-C replacement?
• Do my bone quality, facet joints, or spinal alignment affect my eligibility?
• What benefits can reasonably be expected in my case?
• What are the most important risks for me?
• What restrictions should I expect after surgery?
• What follow-up care or physical therapy might I need?
• What other treatments are available if surgery is not appropriate?

Learn About Mobi-C Cervical Disc Replacement in San Antonio, TX

If you have ongoing neck pain, arm symptoms, or a diagnosed cervical disc problem, an evaluation can help clarify the cause and the available treatment options.

MD Spine Care provides evaluation and treatment planning for spine and neck conditions in the San Antonio area. If you have been told you may need neck surgery, ask whether artificial disc replacement or fusion may be appropriate for your situation.

Visit the dedicated Mobi-C cervical disc replacement page to learn more about the implant, candidacy, the procedure, and questions to discuss with your specialist.

Frequently Asked Questions About Mobi-C