View Entire Collection
By Clinical Topic
By State Requirement
Diabetes – Summer 2012
Future of Nursing Initiative
Heart Failure - Fall 2011
Influenza - Winter 2011
Nursing Ethics - Fall 2011
Trauma - Fall 2010
Traumatic Brain Injury - Fall 2010
Fluids & Electrolytes
WEDNESDAY, Oct. 3 (HealthDay News) -- Local facet joint contact pressures are not significantly altered during sagittal bending after the implantation of a ProDisc-C device at the C5 to C6 level in cadaveric human cervical spines, according to a study published online Sept. 12 in The Spine Journal.
Joel A. Bauman, M.D., from the University of Pennsylvania in Philadelphia, and colleagues conducted a biomechanical study using seven C2 to T1 osteoligamentous cadaveric cervical spines instrumented with a transducer to measure the C5 to C6 facet pressure profiles during physiological sagittal bending. Pressure was measured before and after implantation of a ProDisc-C at the C5 to C6 level.
The researchers found that, following implantation, the mean C5 to C6 range of motion increased significantly, from 9.6 ± 5.1 degrees in the intact condition to 16.2 ± 3.6 degrees after implantation. During extension there was no significant difference in the facet contact pressure between the intact (64 ± 30 kPa) and implanted (44 ± 55 kPa) conditions, despite the changes in rotation. There was also no difference in facet pressure during flexion.
"Although implantation of a ProDisc-C arthroplasty device at the C5 to C6 level increases angular rotations, it does not significantly alter the local facet pressure at the index level in flexion or extension," the authors write. "Using a technique that preserves the capsular ligament, this study provides the first direct measurement of cervical facet pressure in a disc arthroplasty condition."
Several authors disclosed financial ties to the medical device industry.
Full Text (subscription or payment may be required)
Sign up for our free enewsletters to stay up-to-date in your area of practice - or take a look at an archive of prior issues
Join our CESaver program to earn up to 100 contact hours for only $34.95
Explore a world of online resources
Back to Top