Date of download: 10/30/2017 Copyright © ASME. All rights reserved. From: Application of the Restoring Force Method for Identification of Lumbar Spine Flexion-Extension Motion Under Flexion-Extension Moment J Biomech Eng. 2014;136(4):044501-044501-8. doi:10.1115/1.4026893 Figure Legend: Biomechanical results from one representative intact specimen demonstrating the following relationships: (a) axial displacement as a function of time, (b) axial displacement as a function of applied flexion-extension moment, (c) flexion-extension rotation as a function of applied flexion-extension moment, (d) flexion-extension rotation as a function of axial displacement, and (e) flexion-extension rotation as a function of both axial displacement and applied flexion-extension moment

Date of download: 10/30/2017 Copyright © ASME. All rights reserved. From: Application of the Restoring Force Method for Identification of Lumbar Spine Flexion-Extension Motion Under Flexion-Extension Moment J Biomech Eng. 2014;136(4):044501-044501-8. doi:10.1115/1.4026893 Figure Legend: Comparison between the measured flexion-extension rotation (solid) and estimated flexion-extension rotation (dashed), expressed in terms of axial displacement and applied flexion-extension moment, for the (a) intact, (b) injured, and (c) implanted conditions

Date of download: 10/30/2017 Copyright © ASME. All rights reserved. From: Application of the Restoring Force Method for Identification of Lumbar Spine Flexion-Extension Motion Under Flexion-Extension Moment J Biomech Eng. 2014;136(4):044501-044501-8. doi:10.1115/1.4026893 Figure Legend: Normalized bicubic surface plots for the three experimental conditions: (a) intact, (b) injured, and (c) implanted

Date of download: 10/30/2017 Copyright © ASME. All rights reserved. From: Application of the Restoring Force Method for Identification of Lumbar Spine Flexion-Extension Motion Under Flexion-Extension Moment J Biomech Eng. 2014;136(4):044501-044501-8. doi:10.1115/1.4026893 Figure Legend: Flexion-extension hysteresis responses as a function of axial displacement and applied flexion-extension moment for the ensemble of 12 nominally identical intact specimens. Abbreviations: x, axial displacement (mm); y, applied flexion-extension moment (Nm); z, flexion-extension rotation (degrees).

Date of download: 10/30/2017 Copyright © ASME. All rights reserved. From: Application of the Restoring Force Method for Identification of Lumbar Spine Flexion-Extension Motion Under Flexion-Extension Moment J Biomech Eng. 2014;136(4):044501-044501-8. doi:10.1115/1.4026893 Figure Legend: Mean-square fit error of the RFM flexion-extension estimation for the 12 intact lumbar functional spine units

Date of download: 10/30/2017 Copyright © ASME. All rights reserved. From: Application of the Restoring Force Method for Identification of Lumbar Spine Flexion-Extension Motion Under Flexion-Extension Moment J Biomech Eng. 2014;136(4):044501-044501-8. doi:10.1115/1.4026893 Figure Legend: 3D representation of the 16 identified Chebychev (Cij) coefficients for the bicubic fit of flexion-extension rotation as a function of axial displacement and applied flexion-extension moment for the ensemble of 12 nominally identical intact specimens