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THE SIGNIFICANCE OF THE CERVICAL SPINAL CANAL SAGITTAL DIAMETER IN ASSOCIATION WITH MYELOPATHY AND SPONDYLOSIS

Fahri Eryilmaz, Rizwan Ahmed

Introduction: The pre-existing sagittal diameter is the distance from the center of the posterior body of each vertebra to the midpoint of the corresponding lamina. The absolute diameter is the distance from the posterior part of the spondylotic spur to the nearest point of the spinolaminar line in a defined intervertebral space. In their studies, they found a pre-existing sagittal diameter of 16.4 mm to 12.4 mm at C5 and an absolute diameter of 14.8 mm to 12.6 mm at an interval of C5-6. To investigate the significance of the sagittal diameters of the cervical spinal canal in relation to spondylosis and myelopathy. Place and Duration: In the Radiology Department of Jinnah Hospital Lahore for one-year duration from April 2018 to April 2019. Methods: Examination of the initial and reduced sagittal diameter of the cervical spine and their association with cervical spondylosis with and without myelopathy. The study consisted of 150 patients who came to the hospital outpatient clinic. A detailed clinical examination was performed in all patients, including clinical history, general and systemic examination. The main groups in this study were physician-referred patients with a provisional diagnosis of cervical spondylosis. A randomized examination was carried out of patients who visited the Radiology Ward without complaints and were assessed radio-graphically. When undertaking a radiological examination, we observed a specific proforma. Results: When multiple discs were involved, the C5-C6 disc along with C4-C5 involvement was more common. When single disc engagement was present, the C5-C6 disc engagement was at its maximum. Conclusion: The initial size of the canal may be an etiological factor in the development of cervical myelopathy. Key words: spondylosis, myelopathy, sagittal diameter.

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