History

The Mobi-C top plate moves over the plastic insert. The plastic insert slides across and twists on the bottom plate.

The muscles and soft tissue in your neck move the vertebrae and the attached Mobi-C plates. With vertebrae and neck muscle movement, the Mobi-C is free to twist and slide left-to-right and front-to-back. This allows the vertebrae above and below the Mobi-C to move. This feature is designed to allow the disc to self-adjust and move with the spine, which is intended to facilitate motion similar to the natural cervical spine.

There are no invasive keels or screws required for Mobi-C placement. No bone chiseling eliminates operative steps and preserves the vertebrae for a stable surface ideal for one or two-level implantation.

The Mobi-C Cervical Disc:

• Is for adults; the vertebrae must be mature (age range, 21-67 years).

• Takes the place of one or two damaged cervical discs next to each other (contiguous or adjacent) from levels C3-C7.

• Is for patients with arm pain and/or neurological symptoms such as weakness or numbness with or without neck pain. The damaged disc may be irritating the:

  • Spinal cord (myelopathy) or nerve roots (radiculopathy). This can cause a loss of feeling, loss of movement, pain, weakness, or tingling down the arm and possibly into the hands.

• Disc damage needs to be proven by a review of your CT, MRI, or X-ray images. Images of the neck should show at least one of the following:

  • Inner disc squeezing through the outer disc (herniated nucleus pulposus).

  • Degeneration of the spine from wear and tear (spondylosis). There may be boney growth (osteophytes) on a vertebra.

  • Loss of disc height compared to the levels above and below.

• Is for people who have not responded to non-surgical care. Patient should either have:

  • Tried at least six weeks of other medical treatments such as physical therapy and medicine before having surgery; or

  • Have signs or symptoms that their condition is getting worse even with other medical treatments.

If you have any of the following, you should NOT have surgery with Mobi-C:

• An active whole body (systemic) infection, such as pneumonia.

• An infection at the surgery site, such as a skin rash or infected cut.

• A known allergy to what Mobi-C is made of: cobalt, chromium, molybdenum, titanium, hydroxyapatite, polyethylene, and other trace elements. Talk to your doctor if you have a metal allergy.

• Damaged cervical vertebrae from an accident (trauma) at one of the surgery levels.

• An unhealthy shape (deformity) of the cervical vertebrae at one of the surgery levels. Deformity could be caused by an inflammatory disease where the vertebrae swell or grow together and limit movement, such as ankylosing spondylitis and rheumatoid arthritis.

• A cervical spine that shows an unhealthy amount of extra movement (instability). This can be measured by X-rays taken from your side when the spine is still and bending.

• Low bone mineral density, such as osteoporosis or osteopenia (defined as a DEXA bone mineral density T-score < -1.5). This condition could increase the risk of bone breaking or cause an implant to loosen.

• Severe disease or degeneration in the joints in the back of the cervical vertebrae (facet joints).