Stress evaluation of the cervical spinal twine: Affect of the morphology of spinal twine segments on stress.
J Spinal Twine Med. 2016 Could;39(three):327-34
Authors: Nishida N, Kanchiku T, Imajo Y, Suzuki H, Yoshida Y, Kato Y, Nakashima D, Taguchi T
OBJECTIVE: Though there are a number of classifications for cervical myelopathy, these don’t take variations between spinal twine segments into consideration. Furthermore, there was no report of stress analyses for particular person segments thus far.
METHODS: By utilizing the finite aspect technique, we constructed three-d spinal twine fashions comprised of grey matter, white matter, and pia mater of the second to eighth cervical vertebrae (C2-C8). We positioned compression elements (disc and yellow ligament) at the back and front of those fashions, and utilized compression to the posterior part protecting 10%, 20%, 30%, or 40% of the anteroposterior diameter of every cervical spinal twine phase.
RESULTS: Our outcomes revealed that, beneath compression utilized to an space protecting 10%, 20%, or 30% of the anteroposterior diameter of the cervical spinal twine phase, websites of elevated stress assorted relying on the morphology of every cervical spinal twine phase. Below 40% compression, stress was elevated within the grey matter, lateral funiculus, and posterior funiculus of all spinal twine segments, and stress variations between the segments had been smaller.
CONCLUSION: These outcomes point out that, beneath average compression, websites of elevated stress range relying on the morphology of every spinal twine phase or the form of compression elements, and in addition that the variability of signs might rely on the course of compression. Nevertheless, beneath extreme compression, the variations among the many cervical spinal segments are smaller, which can facilitate prognosis.
PMID: 25832134 [PubMed – indexed for MEDLINE]