Follow-up MRI appearance of the surgical site in dogs treated for thoracolumbar intervertebral disc herniation and showing ongoing or recurrent neurological symptoms.

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cam.depositDate2022-06-22
cam.issuedOnline2022-08-12
cam.orpheus.counter6
cam.orpheus.successMon Aug 22 07:46:47 BST 2022 - Embargo updated
dc.contributor.authorPeschard, Anne-Lorraine
dc.contributor.authorFreeman, Paul
dc.contributor.authorGenain, Marie-Aude
dc.contributor.orcidPeschard, Anne-Lorraine [0000-0002-4904-9265]
dc.contributor.orcidGenain, Marie-Aude [0000-0002-3320-6043]
dc.date.accessioned2022-06-22T23:30:57Z
dc.date.available2022-06-22T23:30:57Z
dc.date.issued2023-01
dc.date.updated2022-06-22T10:17:33Z
dc.description.abstractReherniation and reoperation rates of 4.5%-36% are reported in canine patients treated for intervertebral disc herniation (IVDH). Decision-making for surgical reintervention can prove challenging, especially since common postoperative changes are poorly described on MRI. The purpose of this single-center, retrospective, descriptive study was to describe the MRI characteristics of the surgical site in dogs treated for thoracolumbar IVDH and presenting for ongoing or recurrent neurological signs. Twenty-one patients were included for a total of 42 MRI studies. Chondrodystrophic breeds, specifically Dachshunds, were overrepresented. Mean number of days between surgery and second MRI was 335 (range 2-1367). Metallic susceptibility artifacts were seen in seven of 21 cases (33%), but these were limited in extent, spanning on average 1.3 vertebral bodies. In 11 cases, spinal cord compression suspected to be clinically significant was found at the surgical site; the extradural compressive material consisted of intervertebral disc material only, or a combination of intervertebral disc material and hematoma or inflammatory changes in 10 cases, and a displaced articular process and fibrous tissue in one case. The latter is a newly described complication of mini-hemilaminectomies. Paravertebral soft tissue changes and vertebral new bone formation varied according to the postoperative stage at which the patients were imaged. The results of this study supported the use of MRI as a diagnostic modality for spinal imaging following IVDH surgery, and showed that the presence of extradural disc material at a spinal surgical site is common along with various vertebral and paravertebral changes.
dc.description.sponsorshipNo source of funding
dc.identifier.doi10.17863/CAM.85722
dc.identifier.eissn1740-8261
dc.identifier.issn1058-8183
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338313
dc.publisherWiley
dc.publisher.departmentDepartment of Veterinary Medicine
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.subjectcanine
dc.subjectextrusion
dc.subjecthemilaminectomy
dc.subjectimaging
dc.subjectpostoperative
dc.subjectDogs
dc.subjectAnimals
dc.subjectIntervertebral Disc Displacement
dc.subjectRetrospective Studies
dc.subjectFollow-Up Studies
dc.subjectDog Diseases
dc.subjectIntervertebral Disc
dc.subjectMagnetic Resonance Imaging
dc.titleFollow-up MRI appearance of the surgical site in dogs treated for thoracolumbar intervertebral disc herniation and showing ongoing or recurrent neurological symptoms.
dc.typeArticle
dcterms.dateAccepted2022-05-20
prism.publicationNameVet Radiol Ultrasound
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
pubs.licence-identifierapollo-deposit-licence-2-1
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.1111/vru.13143
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