Abstract
An acute extrusion of non-degenerated nucleus pulposus material through a tear in the annulus fibrosus can occur after sudden changes of intradiscal pressure and biomechanics; for example, during vigorous exercise,...
Highlights
An acute extrusion of non-degenerated nucleus pulpous material through a tear of the annulus fibrosus can occur after sudden changes of intradiscal pressure and biomechanics
The recent study by Ros and others describes the myelographic appearance of 21 dogs with suspected acute hydrated non-compressive nucleus pulposus extrusion (AHNCNPE): all dogs had intramedullary patterns, 57% of the dogs showed extradural pattern and the affected intervertebral disc was narrowed in all the dogs
This study found that dogs with AHNCNPE were five times more likely to develop faecal incontinence (23% of the affected dogs) than dogs with suspected ischaemic myelopathy, enhancing the benefits of diagnosing these conditions by magnetic resonance imaging (MRI) to further evaluate possible outcomes. 2,9–11
Summary
An acute extrusion of non-degenerated nucleus pulpous material through a tear of the annulus fibrosus can occur after sudden changes of intradiscal pressure and biomechanics (for example during a vigorous exercise, running, jumping). Some owners might have financial restriction or MRI might not be available in some institutions during out of hours On these circumstances, other imaging modalities (such as myelogram or computed tomography) could be considered to exclude compressive myelopathies with an acute onset (for instance Hansen type I intervertebral disc extrusion) and contribute to the presumptive diagnosis of AHNCNPE. The recent study by Ros and others describes the myelographic appearance of 21 dogs with suspected AHNCNPE (diagnosed on MRI findings): all dogs had intramedullary patterns (attenuation of both contrast columns), 57% of the dogs showed extradural pattern and the affected intervertebral disc was narrowed in all the dogs. Myelography can provide useful information in emergency situations to assess the degree of spinal cord compression and the need to bring that patient to surgery if indicated
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
