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15 Cards in this Set
- Front
- Back
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Thoracic disk disease is most common at which levels?
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T8 to T12 (especially T11-T12)
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What is the classic mechanism of injury resulting in thoracic disk herniation (herniated nucleus pulposus [HNP])?
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Torsion + bend
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An HNP is most likely to be symptomatic in what two situations?
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Scheuermann's disease
Calcified disk |
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What are the two indications for surgery?
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Myelopathy
Pain with magnetic resonance (MR) correlation |
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What are the two surgical options?
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Open/ thoracoscopic (anterior)
Costotransversectomy (posterior) |
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What is the disadvantage of a posterior approach?
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Decreased midline access from the posterior
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If the HNP is calcified, there is an increased risk of what surgical complication?
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Dural tear
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For the approach, should the surgeon go over or under the rib? From the right or left? Why?
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Over rib
From right Avoid artery of Adamkiewicz |
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What supplies the artery of Adamkiewicz?
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Left posterior intercostals T9 to T11
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Where is the watershed area for the thoracic spinal cord?
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Middle T-Spine
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Where does the spinal cord end?
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L1-2
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What are the radiographic criteria for a diagnosis of disseminated idiopathic skeletal hyperostosis (DISH, diffuse idiopathic sketetal hyperostosis?)
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Nonmarginal syndesmophytes>3 levels
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What region of the spine is most commonly involved?
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Right thoracic spine
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Is the disk generally involved?
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DISH generally spares the disk
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What type of syndesmophytes are seen with ankylosing spondylitis?
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Marginal syndesmophytes
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