Fig. 6From: Kambin's triangle-related data based on magnetic resonance neurography and its role in percutaneous transforaminal endoscopic lumbar interbody fusionBar chart of the height and width of the secure region at each lumbar intervertebral space. With “a” representing the comparison between the two groups (P > 0.05). With “b” representing the comparison between the two groups (P < 0.05 and > 0.001)Back to article page