The cervical spine has discs between each bone that provide cushioning
for movements and body loads. The discs and bones in a healthy neck allow
bending from side-to-side and front-to-back, and turning left-to-right.
Disc problems can start from over-use, an accident, or just the wear and
tear of daily life. Degenerative changes in the discs may result in damage
that can cause pain. When a disc degenerates it can have tears or cracks
that lose water, which cause it to become thinner and provide less padding
to absorb movement. Degenerated discs can also bulge (herniate) and pinch
the spinal cord or nerves, which causes loss of feeling, weakness, pain,
or tingling down the arms and hands.
The implantation of the Mobi-C artificial cervical disc is an option instead
of traditional vertebrae-fusion that will also be placed inside the disc
space to restore height and remove pressure on the pinched nerves. However,
the Mobi-C device is designed to allow the neck to maintain normal
motion and potentially prevent the adjacent levels from degenerating, possibly
preventing future surgeries.
The Mobi-C Cervical Disc is one of the most widely used cervical discs
in the world. First implanted in France in November 2004, Mobi-C has now
been implanted in more than 40,000 spinal levels in 25 countries.
Mobi-C is made with two Cobalt Chromium alloy endplates that are plasma
sprayed with titanium and coated with hydroxyapatite, and has an Ultra
High Molecular Weight Polyethylene plastic insert (UHMWPE). These are
proven materials that have been used in orthopedic applications for over 60 years.
Who Are the Candidates for an Artificial Cervical Disc?
Mobi-C is intended for adult patients (skeletally mature) with arm pain
and/or neurological symptoms (such as weakness or numbness) with or without
neck pain at one or two adjacent levels from C3 – C7 in the cervical
spine. Patients should have failed non-surgical care (such as physical
therapy or medications) for at least 6 weeks, or shown signs of progressively
worsening symptoms. Disc damage needs to be confirmed by a doctor’s
review of CT, MRI, or x-ray images. A doctor should always be consulted
for proper indications and use of Mobi-C.
How it Works
Mobi-C is designed to replicate the natural motion of the cervical spine.
Its mobile core slides and rotates inside the disc, self-adjusting to
the patient’s cervical spine’s movements. This means that
Mobi-C can react to the normal motion in the cervical spine. In addition,
the mobile core is designed to reduce the stresses between the implant
and adjacent bone, eliminating the more invasive fixation features found
in other cervical disc replacement devices.
There is limited damage to the patient’s bone because “chisel
cuts” into the small vertebrae of the cervical spine are not needed
in order to implant the Mobi-C,
unlike what is performed with traditional cervical disc procedures. Traditional
artificial discs achieve their fixation via keel cuts or screw holes into
the bone. Mobi-C is designed without a keel to minimize bone removal.
Maneesh Bawa and
Vikram Udani, who are affiliated with Paradise Valley Hospital's San Diego Spine
& Joint Center, currently perform procedures with the Mobi-C.
Click here to view their profiles on our
Physician Directory or call (844) PVH-CALL (844-784-2255) and a friendly representative will
Just give us a call. We'll be happy to answer any questions you may
have. And be sure to ask us about our upcoming seminars on back and neck
pain – we'd love to see you! For more information, call us 24/7
at (844) 784-2255, or you can
e-mail our spine and joint care coordinator.