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

<div>Maximum strain on L5–S1 annulus fibrosus (AF) for the intact model and different degrees of decompression. (a) The maximum strain on AF of L5–S1 under pure moment bending. (b) The maximum strain on AF of L5–S1 under preload bending.</div>

Journal of Healthcare Engineering

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Figure 6

Figure 6: Combined Effects of Graded Foraminotomy and Annular Defect on Biomechanics after Percutaneous Endoscopic Lumbar Decompression: A Finite Element Study 

Figure 6 | Combined Effects of Graded Foraminotomy and Annular Defect on Biomechanics after Percutaneous Endoscopic Lumbar Decompression: A Finite Element Study 