The effects of body fat percentage on inter-vertebral spinal mobility control from hyperextension spinal orthoses

Sa'ed Al Qaroot, B 2012, The effects of body fat percentage on inter-vertebral spinal mobility control from hyperextension spinal orthoses , PhD thesis, University of Salford.

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Hyperextension spinal orthoses are common modalities in treating vertebral fractures. Their objective is to retain the spine in a hyperextended position to offload the fractured vertebra(e) and allow healing. To date, accurate insight into the efficiency of hyperextension spinal orthoses is absent. In particular, published studies have focused on the efficiency of these orthoses in restricting the gross or inter-vertebral spinal range of motion, rather than on their efficiency in retaining the spine in a hyperextended position. Also, in the literature, an increase in body-fatpercentage (obesity) is assumed to reduce spinal orthoses efficiency, although this has not yet been investigated. Therefore, this thesis aimed at filling these gaps by conducting an investigation to measure the efficiency of the two main designs of hyperextension spinal orthoses (Jewett and CASH) in retaining the spine in a hyperextended position whilst worn by normal-body-mass and obese participants. This, however, was preceded by two preliminary studies where: 1) X-ray practices were optimised to produce spinal image of suitable quality for inter-vertebral mobility measurements from the lowest possible dose; and 2) different inter-vertebral mobility measurement methods were tested to identify the one with highest accuracy and reliability (which was the adjusted superimposition method). The findings from these two preliminary studies were essential to fulfilling the aim of this thesis. Specifically, after recruiting two groups of eight healthy participants each (normal-body-mass and obese), the optimised X-ray practices were used to acquire six X-ray images of each participant's spine in three conditions (without, and with Jewett and CASH orthoses). Then, inter-vertebral mobility was measured using the adjusted superimposition method. The results showed that, although statistically insignificant (P>0.05), both Jewett and CASH orthoses demonstrate higher efficiency whilst worn by normal-bodymass group, and that Jewett orthoses tend to be more efficient than CASH orthosis in both normal-body-mass and obese groups.

Item Type: Thesis (PhD)
Contributors: Twiste, M (Supervisor), Hogg, P (Supervisor) and Howard, D (Supervisor)
Schools: Schools > School of Health Sciences
Funders: Ossur Company, University of Jordan
Depositing User: Institutional Repository
Date Deposited: 28 Jul 2021 08:24
Last Modified: 04 Aug 2022 11:23

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