Research Article

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

Figure 3

Comparison of the FE model from in vitro experiments [33, 34]. Rotation curves for (a) L5–S1 and (b) L4–L5 during flexion, extension, lateral bending, and axial rotation.
(a)
(b)