Poel, L.P.F. van de

pressure annular wall annular model figure intradiscal pressure nucleus intradiscal chapter rotation compression intervertebral disc strain marker loading intervertebral change fiber height volume deformation stress experiment difference measurement condition force loading conditions table fluid result tissue water matrix specimen permeability property value decrease in-vivo spine recuperation increase endplate moment needle disc height sample in-vitro pressure differences chapter 2- ii distance series location recording length study relaxation angle curvature measure relation disc geometry flexion parameter registration cause shirazi annulus fibrosus 1000 n annular wall stress order position response plane camera sensor situation sagittal plane sagittal