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, 19 which can be variable and is dependent on the surgical approach, technique used, and surgeon experience. 3 , 20 , 21 Further, it has been shown that the effectiveness of disk fenestration is governed by the amount of nucleus pulposus removed. 22

Open access
in American Journal of Veterinary Research

Acute noncompressive nucleus pulposus extrusions most often occur when an otherwise healthy intervertebral disk is subjected to a brief excessive force. Such extrusions typically occur in dogs during performance of strenuous exercise or following

Full access
in Journal of the American Veterinary Medical Association

,3,5,10 In dogs, ischemic myelopathy is most commonly associated with embolization of fibrocartilaginous material within the spinal cord vasculature that is histologically indistinguishable from nucleus pulposus (ie, fibrocartilaginous embolism) 5

Full access
in Journal of the American Veterinary Medical Association

Dogs with a diagnosis of ANNPE or ischemic myelopathy often have similar clinical signs consisting of acute, focal, nonprogressive neurologic signs associated with spinal cord dysfunction. Acute noncompressive nucleus pulposus extrusion is an

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in Journal of the American Veterinary Medical Association

vertebral bodies and IVDs was observed in the neurologically normal dogs ( Figure 5 ) The nucleus pulposus that remained within the annulus fibrosis at the site of spinal cord compression was decreased in size but had an MRI signal intensity that was similar

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in Journal of the American Veterinary Medical Association

transition of the annulus fibrosus to the nucleus pulposus. 31 Orientation of the sensor was confirmed after the transducer was inserted in the tunnel created in the C6-7 IVD by visual confirmation of the appropriate location of a laser mark printed on the

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in American Journal of Veterinary Research

center–to–CSF T2-weighted signal intensity ratio MMP Matrix metalloproteinase NP Nucleus pulposus RACE Rapid amplification of cDNA ends RT Reverse transcriptase RUNX2 Runt-related transcription factor 2 a. VISART, Toshiba Medical Systems

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in American Journal of Veterinary Research

disk, disruption of the nucleus pulposus and longitudinal vertebral ligaments, and creation of a bone defect in adjoining vertebral bodies. 5–7 To determine the effect of various surgical procedures on the stability and stiffness of the cervical

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in American Journal of Veterinary Research

lesions in the cervical, thoracic, and cranial lumbar regions of the spinal cord. 18,19,32,33 A dog with a focal lesion in the cervical portion of the spinal cord caused by hydrated nucleus pulposus extrusion reportedly had acute onset of clinical signs

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in Journal of the American Veterinary Medical Association

respiratory compromise at presentation were diffuse inflammatory cervical disease in 1 dog, Hansen type I disk herniation in 2 dogs (1 patient at the C2-C3 intervertebral disk space [IVDS] and 1 patient at the C4-C5 IVDS), hydrated nucleus pulposus extrusion

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in Journal of the American Veterinary Medical Association