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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Relationship between developmental canal stenosis and surgical results of anterior decompression and fusion in patients with cervical spondylotic myelopathy

Fig. 1

Determination of Pavlov’s ratio. The anteroposterior diameter of the cervical canal a is measured from the middle portion of the posterior cortical surface of the vertebral body to the innermost cortical surface of the respective lamina. The anteroposterior diameter of the vertebral body b is measured at the midpoint between the anterior surface and the posterior surface. Pavlov’s ratio is determined with the formula a/b. The normal ratio is approximately 1.00

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