Damage Prediction for a Cervical Spine Intervertebral Disc

2016 ◽  
Author(s):  
Shruti Motiwale ◽  
Adhitya V. Subramani ◽  
Xianlian Zhou ◽  
Reuben H. Kraft
Keyword(s):  
Cervical Spine ◽  
Cyclic Loading ◽  
Neck Pain ◽  
Intervertebral Disc ◽  
Intervertebral Disc Degeneration ◽  
High Amplitude ◽  
Cyclic Loads ◽  
Military Population ◽  
Damage Prediction ◽  
The Military

A large part of the military population develop severe neck pain as a result of complex cyclic loading on the cervical spine. It is hypothesized that this pain is linked to accelerated intervertebral disc degeneration caused by wearing heavier head supported equipments for extended periods of time. This heavy head supported mass exerts high amplitude cyclic loads at the neck that may result in fatigue failure of the intervertebral disc. In this paper, we present a methodology to predict damage in the intervertebral disc over extended periods of time. With this model, we attempt to understand initiation and progression of damage in the disc due to loads exerted on the neck. Such an understanding can be beneficial in the development of better helmets and head mounted equipment for the soldiers.

scholarly journals A non-linear multiaxial fatigue damage model for the cervical intervertebral disc annulus

2018 ◽  
Vol 10 (6) ◽  
pp. 168781401877949 ◽  
Author(s):  
Shruti Motiwale ◽  
Adhitya Subramani ◽  
Reuben H Kraft ◽  
Xianlian Zhou
Keyword(s):  
Cervical Spine ◽  
Cyclic Loading ◽  
Neck Pain ◽  
Intervertebral Disc ◽  
Fatigue Damage ◽  
Disc Degeneration ◽  
Intervertebral Discs ◽  
Quantitative Prediction ◽  
Biomechanical Models ◽  
Non Linear

A significant portion of the military population develops severe neck pain in the course of their duties. It has been hypothesized that neck pain is a consequence of accelerated degeneration of the intervertebral discs in the cervical spine, but more occupational and mechanistic-based tools and research are needed to positively confirm the link between neck pain and accelerated disc degeneration. Heavy head-supported mass including helmets and accessories worn by military personnel may subject the intervertebral discs of the cervical spine to complex cyclic loading profiles. In addition, some military operational travel which includes riding on high speed planing boats has also been reported to result in high magnitude cyclic loading on cervical spine discs. In this article, we present a methodology to computationally predict fatigue damage to cervical intervertebral discs over extended periods of time, by integrating kinematics-based biomechanical models with a continuum damage mechanics-based theory of disc degeneration. Through this computational approach, we can gain insights into the relationship between these military activities and possible accelerated fatigue degeneration of cervical intervertebral discs and provide a quantitative prediction tool for decade-long time ranges. The four significant improvements this computational framework adds to the area of modeling intervertebral disc degeneration are the following: (a) it addresses the non-linear nature of fatigue damage evolution, (b) it includes the effect of aging and damage recovery to accurately simulate biological phenomena, (c) it computes fatigue damage taking into account the multiaxial stress state in the disc, and (d) it correlates the computational damage parameter with established clinical grading systems for disc degeneration.

scholarly journals MRI evaluation of spontaneous intervertebral disc degeneration in the alpaca cervical spine

2015 ◽  
Vol 33 (12) ◽  
pp. 1776-1783 ◽  
Author(s):  
Dean K. Stolworthy ◽  
Anton E. Bowden ◽  
Beverly L. Roeder ◽  
Todd F. Robinson ◽  
Jacob G. Holland ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Mri Evaluation

scholarly journals Cervical Spondylosis Management through the Spactacles of Homoeopathy

2021 ◽  
Vol 10 (1) ◽  
pp. 649-655
Author(s):  
Shashi Bhushan Singh ◽  
◽  
Ravi Prakash ◽  
Keyword(s):  
Risk Factor ◽  
Cervical Spine ◽  
Soft Tissue ◽  
Neck Pain ◽  
Intervertebral Disc ◽  
Cervical Spondylosis ◽  
Soft Tissues ◽  
Holistic Approach

Cervical spondylosis is one of the commonly seen diseases nowadays. Neck pain, which usually arises from diseases of the cervical spine & soft tissues of the neck, is common. “SPONDYLO” is a Greek term, meaning “Vertebra” & spondylosis generally mean changes in the vertrbral joint characterized by increasing degeneration of the intervertebral disc with subsequent changes in the bones & soft tissue. The management of cervical spondylosis is very much effective with Homoeopathic medicine. This article stress upon the risk factor, pathophysiology, symptomatology, investigation in concise manner as well as emphasises how homoeopathy can manage in such cases by its holistic approach of treatment.

Towards a Micromechanical Model of Intervertebral Disc Degeneration Under Cyclic Loading

2014 ◽  
Author(s):  
Anand R. Makwana ◽  
A. R. Krishna ◽  
Hao Yuan ◽  
Reuben H. Kraft ◽  
Xianlian Zhou ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Cyclic Loading ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Micromechanical Model ◽  
Damage Mechanism ◽  
Long Period ◽  
Biomechanical Loading ◽  
Height Change

A number of activities subject the spinal cord [1] to various loading conditions that lead to disc degeneration. In this paper a brief overview on the understanding of the micromechanics and mechanisms of intervertebral disc degeneration is presented and extended to include water loss and disc height change. The focus is on a computational model of the intervertebral disc degeneration that attempts to capture the initiation and the progression of the damage mechanism under fatigue. This model can be used to study the effects on disc under short or long period biomechanical loading in work or combat environments.

Spontaneous regression of a cervical intervertebral disc extrusion in French bulldogs documented on MRI after medical management

2019 ◽  
Vol 7 (2) ◽  
pp. e000817
Author(s):  
Victoria Argent ◽  
Anne Fraser ◽  
Lisa Alves ◽  
Paul Freeman
Keyword(s):  
Cervical Spine ◽  
Neck Pain ◽  
Intervertebral Disc ◽  
Medical Management ◽  
Spontaneous Regression ◽  
Myoclonic Twitching ◽  
Disc Extrusion

Spontaneous regression of cervical intervertebral disc extrusion (cIVDE) has been reported in people. It has also been reported in a dog after four months of medical management. Two French bulldogs were presented to two different referral centres for signs of neck pain or myoclonic twitching. Both were diagnosed with cIVDE on MRI and were managed medically. One dog re-presented after six weeks with recurrent signs while it was still being strictly rested. Repeat MRI showed a new disc extrusion with apparent spontaneous regression of the initial cIVDE. The same re-presentation occurred in the second dog with a year intermission. These two cases demonstrate that spontaneous regression of intervertebral disc extrusion is a phenomenon occurring in the cervical spine of dogs. Notably one dog had a new disc extrusion during a period of rest, thus illustrating that further work is needed to understand how best to utilise medical management and crate rest.

scholarly journals Validity and interobserver agreement of a new radiographic grading system for intervertebral disc degeneration: Part II. Cervical spine

2006 ◽  
Vol 15 (6) ◽  
pp. 732-741 ◽  
Author(s):  
Annette Kettler ◽  
Friederike Rohlmann ◽  
Cornelia Neidlinger-Wilke ◽  
Karin Werner ◽  
Lutz Claes ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Interobserver Agreement ◽  
Grading System ◽  
Radiographic Grading
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