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Showing 1 to 13 of 13 for “"spine biomechanics"”.
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In vivo lumbar spine biomechanics : vertebral kinematics, intervertebral disc deformation, and disc loads
Knowledge of lumbar spine biomechanics in living human subjects is fundamental for understanding mechanisms of spinal injury and pathology, for improvement of corresponding clinical treatments, and for design of spinal prosthesis. However, due to the complicated spine anatomy and loading conditions …
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Development and application of a non invasive image matching method to study spine biomechanics
Research on spine biomechanics is critical to understand pathology such as degenerative changes and low back pain. However, current study on in-vivo spine biomechanics is limited by the complex anatomy and invasive methodology. Modem clinical imaging techniques such as magnetic resonance and …
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Alterations and Asymmetries in Trunk Mechanics and Neuromuscular Control among Persons with Lower-Limb Amputation: Exploring Potential Pathways of Low Back Pain
… limb may lead to asymmetries in these behaviors. Spine biomechanics (e.g., loading and stability) are substantially influenced by trunk passive properties and neuromuscular control, and alterations in these behaviors are associated with abnormal mechanics of the spinal column and an increased LBP …
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Spine Lifting Biomechanics Between Varying Occupational Activity Levels And Recreational Physical Activity Levels
… associated with these unbalances. Moreover, poor spine biomechanics can indicate a need for adjustment to present recommendations for optimum movement patterns. Some research of spine biomechanics associated with sedentary occupation or lifestyle exists. However, up to the author’s knowledge, no …
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Passive Stiffness Characteristics of the Scoliotic Lumbar Torso in Trunk Flexion, Extension, Lateral bending, and Axial Rotation
… age increases, there is a need to study the spine biomechanics of adults with scoliosis. Most studies examining the mechanics of scoliosis have focused on in vitro testing or computer simulations, but in vivo testing of the mechanical response of a scoliotic spine has not yet been reported. …
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A Virtual Model of the Human Cervical Spine for Physics-based Simulation and Applications
… recent advances in computer technology, Our Biomechanics Laboratory have made an effort to integrate computer animation and engineering analysis software into biomedical research, specifically towards simulation and animation of in vitro experimentation of the human cervical spine in the …
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Biomechanical Comparison of Traditional Laminectomy and Minimally‑Invasive Facetectomies
The facet joints of the lumbar spine are one of the sources of low‑back pain that affects a great portion of the population. Minimally‑invasive (MI) procedures have been becoming more popular in the surgical decompression of the spine because they offer shorter recovery time and involve removal of …
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Biomechanical and Finite Element Analyses of Alternative Cements for use in Vertebral Kyphoplasty
… fracture occurs when the vertebral body of the spine collapses due to osteoporosis or trauma. Depending on the degree of osteoporosis, the forces required to induce vertebral compression fracture can vary while the forces required to induce fractures via trauma are large. However, the vast …
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Kinematic Demands of Nucleus Arthroplasty Technology
… the effort or work required to move the altered spine condition through a prescribed kinematic path relative to the intact spine condition. The closer the loading mechanics of the altered spine are to the intact spine condition, the better the likelihood the device will restore the native …
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A Passive Pure Moment Protocol for Testing Spine Segments: Development and Application
… a pure moment protocol using a programmable spine robot, and use the data gathered to calculate the IAR for harvested specimen and those implanted with a constrained total disc replacement (TDR) device.</p> <p> Six human lumbar single-level motion segment units (MSUs) at the L4-L5 level were …
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Design and Development of a Novel Expanding Pedicle Screw for Use in the Osteoporotic Lumbar Spine
… do not provide adequate fixation in osteoporotic spines. The objective of this thesis was to develop a novel expanding screw for use in osteoporotic lumbar pedicles. Helical screws capable of expanding post insertion were built on a rapid prototype machine. A materials testing machine performed …
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Rowing Biomechanics: Technique Changes with an Increase of Power Demand
… Results showed that the curvature of thoracic spine changed throughout the rowing cycle but did not change with increasing power level. The transverse shoulder angle decreased (the upper back was less straight) as power level increased (R2=-0.69±19), suggesting that the scapula moved …
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Extracellular Matrix Degradation and Mechanical Integrity of Degenerated Human Annulus Fibrosus from Surgical Specimens
Intervertebral disc (IVD) degeneration is a leading cause of low back pain, yet the mechanistic link between biochemical matrix degradation and functional mechanical failure of the annulus fibrosus (AF) remains poorly defined in human tissue. The interlamellar matrix (ILM), which binds adjacent …