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Analytical, Diagnostic and Therapeutic Techniques and Equipment Commons™
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Full-Text Articles in Analytical, Diagnostic and Therapeutic Techniques and Equipment
A Passive Pure Moment Protocol For Testing Spine Segments: Development And Application, Kyle David Fraysur
A Passive Pure Moment Protocol For Testing Spine Segments: Development And Application, Kyle David Fraysur
Theses and Dissertations (ETD)
The pure moment protocol is the accepted standard for performing in-vitro biomechanical testing of spinal devices. Published studies predominantly report range of motion and flexibility data, but information regarding the segment center of rotation is also relevant. Most current pure moment platforms are not sensitive enough to accurately calculate the instantaneous axis of rotation (IAR) for a segment throughout a bending motion. The purpose of this study was to simulate 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 …
Kinematic Demands Of Nucleus Arthroplasty Technology, Elizabeth J. Sander
Kinematic Demands Of Nucleus Arthroplasty Technology, Elizabeth J. Sander
Theses and Dissertations (ETD)
Recent advancements in biomaterial technologies have fostered growth in alternative surgical procedures to fusion surgery for treatment of early stages of degenerative disc disease. One application of immediate interest is that of nucleus arthroplasty (NA). Novel materials are being developed to better match the nonlinear biomechanical properties of the native tissue. The effects of changing the motion segment unit (MSU) properties via surgery (nucleotomy) or placement of a nucleus arthroplasty material, changes 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 …