Incidence and Risk Factors of Tandem Spinal Stenosis in Patients Undergone Surgery for Lumbar Stenosis
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Abstract
Background: Tandem spinal stenosis has been reported in many studies with a varied prevalence and described the characteristics of the disease and its treatment options. However, the tandem cervical stenosis that MRI show concurrent cervical cord compression in patients with symptomatic lumbar stenosis had not been evaluated in Thailand
Objective: To evaluate the prevalence and risk factors of tandem cervical stenosis that MRI show concurrent cervical cord compression in patients who have undergone surgery for lumbar spinal stenosis.
Study Design: A Descriptive retrospective study.
Methods: A total of 80 patients, who had undergone surgery for lumbar spinal stenosis from January 2015 to January 2020, were enrolled in this study. All patients underwent lumbar magnetic resonance imaging (MRI) along with T2-weight ed whole spine sagittal MRI. The concurrent cervical stenosis and the severity of the lesions was graded from grade 0 (no cord compression) and grade 1 (any lesion compressing the cord). The prevalence of concurrent cervical stenosis was then analyzed. In addition, the risk factors for tandem spinal stenosis were evaluated, and the risk factors affecting the severity of the concurrent lesion were analyzed individually.
Results: Forty-three (53.8%) and thirty-seven (46.3%) patients had a no concurrent cervical Compression and had concurrent cervical compressive lesion, respectively. There was a positive correlation between the multiple level lumbar stenosis and the prevalence of concurrent cervical compressive lesion. (p-value=0.02)
Conclusion: The incidence of concurrent cervical stenosis may be apparently high in elderly patients undergone surgery for lumbar spinal stenosis, particularly in those with multiple level lumbar stenosis. This highlights the need for a preoperative evaluation of the cervical spine lesion in these patients.
Keywords: Tandem spinal stenosis, Incidence, Risk factor
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References
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