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Fig. 2 | BMC Musculoskeletal Disorders

Fig. 2

From: Angulation error assessment for the trajectory in the anteroposterior and lateral fluoroscopic views during percutaneous endoscopic transforaminal lumbar discectomy

Fig. 2

Illustration of the relationship between the virtual trajectory and the anatomic planes. Red cylinder: virtual trajectory; ★: transverse plane; ▲: coronal plane; ●: sagittal plane; α: cephalad angulation (CA), the angle between the virtual trajectory and the transverse plane; β: coronal angulation of the cephalad angle plane (CACAP), the angle between the cephalad angle plane (the plane where the cephalad angle lay) and the coronal plane; γ: the projection of CA on the sagittal plane (sagittal CA); δ: the projection of CA on the coronal plane (coronal CA)

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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