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Tandem stenosis: a cadaveric study in osseous morphology.
Michael J Lee1, Ryan Garcia, Ezequiel H Cassinelli
1Department of Orthopaedic Surgery, University of Washington Medical Center, Cleveland, OH, USA. jihoon2000@hotmail.com
The Spine Journal : Official Journal of the North American Spine Society
|February 19, 2008
Summary
Tandem stenosis, affecting both the cervical and lumbar spine, was found in 0.9% to 5.4% of cadavers. This condition significantly associates spinal stenosis in these two regions.
Area of Science:
- Spine anatomy
- Degenerative spine disease
- Epidemiology
Background:
- Tandem stenosis involves concurrent cervical and lumbar spinal stenosis.
- Estimated prevalence ranges from 5% to 25%.
- Symptomatic cases present with confusing neurogenic claudication and myelopathy symptoms.
Purpose of the Study:
- Determine the prevalence of anatomic tandem stenosis in a cadaveric population.
- Investigate the associative relationship between lumbar and cervical stenosis.
- Assess the predictive value of stenosis in one spinal region for stenosis in the other.
Main Methods:
- Examined 440 skeletally mature cadaveric spines from the Hamann Todd Collection.
- Measured mid-sagittal canal diameters (C3-C7 and L1-L5) using digital calipers.
- Defined stenosis as a canal diameter < 12 mm; analyzed data for contemporary body size.
Main Results:
- Prevalence of tandem stenosis in the studied population was 0.9% to 5.4%.
- A statistically significant association (p < .05) was found between cervical and lumbar stenosis.
- Stenosis in one region predicted stenosis in the other 15.3% to 32.4% of the time.
Conclusions:
- Tandem stenosis should be considered in patients with mixed claudication and myeloradiculopathy.
- The study confirms a significant association between cervical and lumbar spinal stenosis.
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