Spine

Authors: Martin-Vaquero P1, da Costa RC2.
Journal: Vet J

Transcranial magnetic motor evoked potentials (TMMEPs) assess the functional integrity of the descending motor pathways, which are typically compromised in canine cervical spondylomyelopathy (CSM). The objective of this prospective study was to establish the reference ranges of TMMEP latency and amplitude in clinically normal (control) Great Danes (GDs), compare TMMEPs obtained in GDs with and without CSM, and determine whether there is any association between TMMEP data and severity of neurological signs or magnetic resonance imaging (MRI) findings.

Category: Spine
Authors: Martin-Vaquero P1, da Costa RC, Drost WT.
Journal: Vet Radiol Ultrasound

Computed tomography (CT) provides excellent bony detail, whereas magnetic resonance (MR) imaging is superior in evaluating the neural structures. The purpose of this prospective study was to assess interobserver and intermethod agreement in the evaluation of cervical vertebral column morphology and lesion severity in Great Danes with cervical spondylomyelopathy by use of noncontrast CT and high-field MR imaging. Fifteen client-owned affected Great Danes were enrolled. All dogs underwent noncontrast CT under sedation and MR imaging under general anesthesia of the cervical vertebral column.

Category: Imaging - Spine
Authors: Martin-Vaquero P1, da Costa RC.
Journal: Vet Radiol Ultrasound

Great Danes are predisposed to osseous-associated cervical spondylomyelopathy (Wobbler syndrome). The first aim of this prospective study was to compare values measured using previously published intravertebral and intervertebral ratio methods and a novel ventrodorsal ratio method in radiographs of clinically normal and affected Great Danes. The second aim was to determine whether these ratios could be used as predictors of sites of spinal cord compression based on magnetic resonance imaging (MRI). Thirty dogs (15 normal, 15 affected) were prospectively enrolled.

Category: Imaging - Spine
Authors: Mouradian-Darby AE1, Young BD, Griffin JF 4th, Mansell J, Levine JM.
Journal: J Small Anim Pract

This study presents a case of lymphocytic ganglioneuritis in a dog secondary to intervertebral disc extrusion that mimicked a peripheral nerve sheath tumour on magnetic resonance imaging. A four-year-old spayed female dachshund with lumbar pain was imaged via magnetic resonance. A tubular, space-occupying, contrast-enhancing lesion was noted in the right intervertebral foramen at L6 to L7. This was presumed to represent focal enlargement of the right sixth lumbar spinal nerve.

Category: Spine
Authors: Reynolds D1, Tucker RL, Fitzpatrick N.
Journal: VCOT

OBJECTIVE:

To examine conventional magnetic resonance imaging planes of the lumbosacral foramina to obtain objective measurements of foraminal size in medium-sized (20-28 kg) normal dogs.

METHOD:

Ten canine cadavers were evaluated using magnetic resonance imaging in neutral, flexed and extended position. Foraminal ratios, areas and lumbosacral angles were calculated and their relationship to body weight was evaluated.

RESULTS:

Category: Imaging - Spine
Authors: Grossbard BP1, Loughin CA, Marino DJ, Marino LJ, Sackman J, Umbaugh SE, Solt PS, Afruz J, Leando P, Lesser ML, Akerman M.
Journal: Vet Surg

OBJECTIVE:

To: (1) determine the success of medical infrared imaging (MII) in identifying dogs with TLIVDD, (2) compare MII localization with magnetic resonance imaging (MRI) results and surgical findings, and (3) determine if the MII pattern returns to that of normal dogs 10 weeks after decompression surgery.

STUDY DESIGN:

Prospective case series.

ANIMALS:

Chondrodystrophic dogs (n = 58) with Type I TLIVDD and 14 chondrodystrophic dogs with no evidence of TLIVDD.

METHODS:

Category: Imaging - Spine
Authors: Lowrie ML1, Platt SR, Garosi LS.
Journal: Vet Surg

OBJECTIVE:

To (1) synthesize the terminology used to classify extramedullary spinal cysts in dogs to clarify some of the commonly reported misconceptions, and (2) propose a classification scheme to limit confusion with terminology.

STUDY DESIGN:

Literature review.

METHODS:

Category: Spine
Authors: Levy M1, Gaschen L, Rademacher N, Bragulla H.
Journal: Vet Radiol Ultrasound

Ultrasound-guided intraarticular injection of cervical articular process joints is a well-established procedure in both humans and horses for neck pain resulting from osteoarthritis, but the technique has not been described in dogs. Aims of this study were to describe the ultrasonographic anatomy and landmarks for cervical articular process joint injections in the dog, develop a technique for articular process joint injections using these landmarks, and determine the accuracy of injections and factors that may influence it.

Category: Pain Management - Spine