Spinal Mechanics

The biomechanical influence of anterior vertebral body osteophytes on the lumbar spine: A finite element study

The Spine Journal Volume 18, Issue 12, December 2018, Pages 2288-2296 KuanWang MD Abstract BACKGROUND CONTEXT Anterior vertebral body osteophytes are common with degeneration but their biomechanical influence on the whole lumbar spine remains unclear. PURPOSE To investigate the biomechanical influence of anterior vertebral body osteophytes on the whole lumbar spine. STUDY DESIGN/SETTING This is […]

ABCs of the degenerative spine – Full Text Article

Insights Imaging. 2018 Apr; 9(2): 253–274. Published online 2018 Mar 22. doi: 10.1007/s13244-017-0584-z PMCID: PMC5893484 PMID: 29569215 Sergiy V. Kushchayev Abstract Degenerative changes in the spine have high medical and socioeconomic significance. Imaging of the degenerative spine is a frequent challenge in radiology. The pathogenesis of this degenerative process represents a biomechanically related continuum of […]

Uneven intervertebral motion sharing is related to disc degeneration and is greater in patients with chronic, non-specific low back pain – Full Text Article

European Spine Journal pp 1–9 Uneven intervertebral motion sharing is related to disc degeneration and is greater in patients with chronic, non-specific low back pain: an in vivo, cross-sectional cohort comparison of intervertebral dynamics using quantitative fluoroscopy Authors Alan Breen Cite this article as: Breen, A. & Breen, A. Eur Spine J (2017). doi:10.1007/s00586-017-5155-y Abstract […]

Influence of Complex Loading Conditions on Intervertebral Disc Failure

Spine: 15 January 2017 – Volume 42 – Issue 2 – p E78–E85 doi: 10.1097/BRS.0000000000001699 Biomechanics Berger-Roscher, Nikolaus Dipl.-Ing.; Casaroli, Gloria MSEng; Rasche, Volker PhD; Villa, Tomaso PhD; Galbusera, Fabio PhD; Wilke, Hans-Joachim PhD Study Design. High resolution imaging investigation of the failure of ovine lumbar intervertebral discs under complex loading. Objective. To investigate how […]

Kinematics of the upper cervical spine during high velocity-low amplitude manipulation

Analysis of intra- and inter-operator reliability for pre-manipulation positioning and impulse displacements Journal of Electromyography and Kinesiology Volume 24, Issue 5, October 2014, Pages 621-627 Abstract To date, kinematics data analyzing continuous 3D motion of upper cervical spine (UCS) manipulation is lacking. This in vitro study aims at investigating inter- and intra-operator reliability of kinematics […]

Correlation of Cervical Sagittal Alignment Parameters on Full-Length Spine Radiographs Compared with Dedicated Cervical Radiographs

Bodindr Thepchatri , M.D The Spine Journal Volume 14, Issue 11, Supplement, Pages A1-A8, S1-S224 (1 November 2014) Proceedings of the 29th Annual Meeting of the North American Spine Society, NASS 29th Annual Meeting San Francisco, California 12–15 November 2014 BACKGROUND CONTEXT: Recently, attention has been directed to the impact of adult scoliosis or scoliosis […]

The effect of a mandibular advancement appliance on cervical lordosis in patients with TMD and cervical pain

Cranio. 2014 Oct;32(4):275-82. doi: 10.1179/0886963414Z.00000000038. Epub 2014 Apr 14. The effect of a mandibular advancement appliance on cervical lordosis in patients with TMD and cervical pain. Santander H, Zúñiga C, Miralles R, Valenzuela S, Santander MC, Gutiérrez MF, Córdova R. Abstract AIMS: A preliminary study to compare cervical lordosis by means of cervical cephalometric analysis, […]

Kinematics of the thoracic spine in trunk lateral bending In vivo three-dimensional analysis

Takahito Fujimori, MD, PhD The Spine Journal Available online 10 December 2013 In Press Abstract Background Context In vivo three-dimensional kinematics of the thoracic spine in trunk lateral bending with an intact rib cage and soft tissues has not been well documented. There is no quantitative data in the literature for lateral bending in consecutive thoracic […]

Continuous cervical spine kinematics during in vivo dynamic flexion-extension

William J. Anderst, MS The Spine Journal: Available online 7 November 2013: In Press Abstract Background context A precise and comprehensive definition of “normal” in vivo cervical kinematics does not exist due to high intersubject variability and the absence of midrange kinematic data. In vitro test protocols and finite element models that are validated using […]

Increased pelvic incidence May lead to arthritis and sagittal orientation of the facet joints at the lower lumbar spine

Jentzsch T,et al. BMC Med Imaging. 2013 Nov 5;13(1):34. [Epub ahead of print] PubMed Reference:  http://www.ncbi.nlm.nih.gov/m/pubmed/24188071/ Full Text Article PDF Abstract BACKGROUND: Correct sagittal alignment with a balanced pelvis and spine is crucial in the management of spinal disorders. The pelvic incidence (PI) describes the sagittal pelvic alignment and is position-independent. It has barely been […]

Range of motion of thoracic spine in sagittal plane

Daigo Morita European Spine Journal November 2013 Abstract Study design Imaging study of thoracic spine. Objective The purpose of this study was to investigate dynamic alignment and range of motion (ROM) at all segmental levels of thoracic spine. Summary of background data Thoracic spine is considered to have restricted ROM because of restriction by the […]

Biomechanics of the spine. Part II: spinal instability

Izzo R, et al. Eur J Radiol. 2013 Jan;82(1):127-38. doi: 10.1016/j.ejrad.2012.07.023. Epub 2012 Oct 22. Affiliation Neuroradiology Department, “A.Cardarelli” Hospital, Napoli, Italy. roberto1766@interfree.it Abstract Spine stability is the basic requirement to protect nervous structures and prevent the early deterioration of spinal components. All bony and soft spinal components contribute to stability, so any degenerative, traumatic […]

Biomechanics of the spine. Part I: spinal stability

Izzo R, et al. Eur J Radiol. 2013 Jan;82(1):118-26. doi: 10.1016/j.ejrad.2012.07.024. Epub 2012 Oct 22. Affiliation Neuroradiology Department, “A. Cardarelli” Hospital, Napoli, Italy. roberto1766@interfree.it Abstract Biomechanics, the application of mechanical principles to living organisms, helps us to understand how all the bony and soft spinal components contribute individually and together to ensure spinal stability, and […]

Straightened cervical lordosis causes stress concentration

Australas Phys Eng Sci Med. 2013 Mar;36(1):27-33. doi: 10.1007/s13246-013-0182-4. Epub 2013 Jan 25. Straightened cervical lordosis causes stress concentration: a finite element model study. Wei W, Liao S, Shi S, Fei J, Wang Y, Chen C. Abstract In this study, we propose a finite element analysis of the complete cervical spine with straightened and normal […]

Altered Spinal Motion in Low Back Pain Associated with Lumbar Strain and Spondylosis

Joseph S. Cheng Evidence-Based Spine-Care Journal 2013; 04(01): 006-012 Abstract Study Design We present a patient-specific computer model created to translate two-dimensional (2D) fluoroscopic motion data into three-dimensional (3D) in vivo biomechanical motion data. Objective The aim of this study is to determine the in vivo biomechanical differences in patients with and without acute low back pain. […]

Segmental lumbar rotation in patients with discogenic low back pain during functional weight-bearing activities

J Bone Joint Surg Am. 2011 Jan 5;93(1):29-37. doi: 10.2106/JBJS.I.01348. Passias PG, Wang S, Kozanek M, Xia Q, Li W, Grottkau B, Wood KB, Li G. Abstract BACKGROUND: Little information is available on vertebral motion in patients with discogenic low back pain under physiological conditions. We previously validated a combined dual fluoroscopic and magnetic resonance […]