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Fig. 2 | BMC Musculoskeletal Disorders

Fig. 2

From: The reliability, correlation with clinical symptoms and surgical outcomes of dural sac cross-sectional area, nerve root sedimentation sign and morphological grade for lumbar spinal stenosis

Fig. 2

The image of the most stenotic layer of a 64-year-old man with L4–5 spinal stenosis. A the image is evaluated as morphological grade D and nerve root sedimentation sign (P [ −]); B the anterior–posterior and transverse diameter of the dural sac are 7.8 and 15.6 mm, respectively, and the dural sac cross-sectional area is 60.8 mm2 based on the calculation method of Hamanishi et al. [4]

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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