Combined Effects of Graded Foraminotomy and Annular Defect on Biomechanics after Percutaneous Endoscopic Lumbar Decompression: A Finite Element Study

<div>Maximum strain of the exposed nucleus pulposus (NP) in L5–S1 disc for intact model and different degrees of decompression. (a) The maximum strain of the exposed NP in L5–S1 disc under pure moment bending. (b) The maximum strain of the exposed NP in L5–S1 disc under preload bending.</div>

Journal of Healthcare Engineering

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Figure 7

Figure 7: Combined Effects of Graded Foraminotomy and Annular Defect on Biomechanics after Percutaneous Endoscopic Lumbar Decompression: A Finite Element Study 

Figure 7 | Combined Effects of Graded Foraminotomy and Annular Defect on Biomechanics after Percutaneous Endoscopic Lumbar Decompression: A Finite Element Study 