Evaluation of the rostral projection of the sacral lamina as a component of degenerative lumbosacral stenosis in German shepherd dogs

Saunders, Harvey; Worth, Allison; Bridges, James P.; Hartman, Angela

doi:10.1111/vsu.12899

Cited by 3 publications

(2 citation statements)

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“…The clinical relevance of the cranial margin of the dorsal lamina of S1 and the role of telescoping remains a point of discussion. Although its measurement on radiographs is reliable,44 the rostral projection of the sacral lamina may not be a predisposing factor in the development of cauda equina syndrome due to DLSS in GSD 45…”

Section: Predisposing Factors In the Development Of Dlssmentioning

confidence: 99%

<p>Canine Degenerative Lumbosacral Stenosis: Prevalence, Impact And Management Strategies</p>

Worth¹,

Meij²,

Jeffery³

2019

VMRR

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Canine degenerative lumbosacral stenosis (DLSS) is a syndrome of low back pain with or without neurologic dysfunction associated with compression of the cauda equina. Most commonly occurring in medium- to large-breed dogs of middle to older age, German shepherd and working dogs are predisposed. Diagnosis is based on a combination of clinical signs, advanced imaging and ruling out other differential diagnoses. The volume of the intervertebral foramina at the lumbosacral junction is naturally reduced on extension but degenerative changes lead to a more marked reduction that can impinge the L7 nerve roots. Evidence is lacking on which to base decision-making for treatment of dogs with DLSS. However, surgical intervention may be indicated in dogs that do not respond to conservative management, or for dogs in which there is a requirement to work that prevents lifestyle adjustments. Improvements in electrodiagnosis and novel intra-discal treatments may improve the management of DLSS in the future.

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Section: Predisposing Factors In the Development Of Dlssmentioning

confidence: 99%

<p>Canine Degenerative Lumbosacral Stenosis: Prevalence, Impact And Management Strategies</p>

Worth¹,

Meij²,

Jeffery³

2019

VMRR

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“…However, as a discectomy was not included, there are some limitations. This study suggests that procedures using an endoscope could be performed in large-breed dogs, especially German Shepherd dogs, which may often develop degenerative lumbosacral disc diseases (Tarvin and Prata 1980;Wheeler 1992;Saunders et al 2018). However, routine fenestration and distraction may be warranted as a degenerative disease (Wheeler 1992;Danielsson and Sjostrom 1999;Willems et al 2018).…”

Section: Discussionmentioning

confidence: 96%

Percutaneous endoscopic limited-lumbosacral-dorsal laminectomy in eight dogs - A cadaveric study

Yang¹,

Moon²,

Hwang³

et al. 2021

Vet. Med. - Czech

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This study aimed to investigate the technical feasibility of a percutaneous endoscopic limited-dorsal laminectomy (PELDL) and to evaluate if the decompression and examination of the lumbosacral vertebral canals could be achieved using an endoscope in small dogs. A total of eight fresh canine cadavers were used for the study. Following the injection of a barium and agarose mixture (BA-gel), which simulates intervertebral disc herniation, a PELDL was performed over L7–S1 in these animals. Computed tomography (CT) scans were obtained pre- and postoperatively to evaluate the surgical outcomes. All the procedures were completed with a clear visualisation of the spinal cord and removal of the BA-gel. The mean surgery time for the PELDL was 30.00 ± 12.01 minutes. In two dogs, iatrogenic nerve root injuries were caused by the surgical instruments during the operation. The CT scans showed that the amount of BA-gel removed was sufficient for a spinal-cord decompression. A PELDL could be used for the BA-gel removal to decompress the spinal cord and provide a clear view of the spinal canal. Therefore, it could be used as an alternative surgical option to treat lumbosacral disc disease in dogs.

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Preliminary evaluation of a novel method for computed tomography quantification of lumbosacral articular process displacement in dogs with and without degenerative lumbosacral stenosis

Carballo,

Frederick,

Keys

et al. 2024

Front. Vet. Sci.

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ObjectiveThis study aimed to describe the diagnostic discrimination and reliability of a novel technique for quantifying lumbosacral articular process displacement (LSAPD) on dorsal plane computed tomography (DPCT) imaging in dogs with and without degenerative lumbosacral stenosis (DLSS).Study designDPCT surveys of the lumbosacral vertebral column were performed with dogs positioned in extension and flexion. LSAPD is defined as the distance between the cranial aspects of the L7 and S1 articular processes. The LSAPD ratio is identified by dividing the LSAPD by the length of the L7 articular process. Intraclass correlation coefficients (ICCs) for intra- and inter-observer reliability were calculated, and logistic regressions were used to test for the association of LSAPD and LSAPD ratio with odds of DLSS. Significance was set at 0.05. Receiver operator characteristic (ROC) curves were calculated to determine diagnostic discrimination and optimal cutoff for LSAPD and LSAPD ratio in the diagnosis of DLSS.ResultsIntra- and inter-observer reliabilities were excellent for most measurements. In the current cohort, excluding covariates, the area under the curve (AUC) (95%CI) for LSAPD and LSAPD ratio measured in a flexed position were both 0.89 (0.82–0.96), suggesting potentially excellent discrimination for using this measurement as a marker for diagnosing DLSS, pending further studies. The cutoffs for flexed LSAPD and LSAPD ratio that maximizes Youden’s index were ≥ 1.2 mm and ≥ 9%, respectively. When age and weight were subsequently included as covariates in a multivariable analysis, a significant relationship between LSAPD or LSAPD ratio and odds of diagnosis of DLSS was not demonstrated, suggesting the need for a larger sample size.ConclusionThe results of this study suggest that measurements of LSAPD and LSAPD ratio on DPCT are feasible and reliable, although their diagnostic discrimination in DLSS should be evaluated further in future prospective studies.

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Evaluation of the rostral projection of the sacral lamina as a component of degenerative lumbosacral stenosis in German shepherd dogs

Abstract: Rostral projection of the sacral lamina may not be a predisposing factor in the development of CES due to DLSS in GSD.

Cited by 3 publications

References 24 publications

<p>Canine Degenerative Lumbosacral Stenosis: Prevalence, Impact And Management Strategies</p>

<p>Canine Degenerative Lumbosacral Stenosis: Prevalence, Impact And Management Strategies</p>

Percutaneous endoscopic limited-lumbosacral-dorsal laminectomy in eight dogs - A cadaveric study

Preliminary evaluation of a novel method for computed tomography quantification of lumbosacral articular process displacement in dogs with and without degenerative lumbosacral stenosis

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Evaluation of the rostral projection of the sacral lamina as a component of degenerative lumbosacral stenosis in German shepherd dogs

Abstract: Rostral projection of the sacral lamina may not be a predisposing factor in the development of CES due to DLSS in GSD.

Cited by 3 publications

References 24 publications

<p>Canine Degenerative Lumbosacral Stenosis: Prevalence, Impact And Management Strategies</p>

<p>Canine Degenerative Lumbosacral Stenosis: Prevalence, Impact And Management Strategies</p>

Percutaneous endoscopic limited-lumbosacral-dorsal laminectomy in eight dogs - A cadaveric study

Preliminary evaluation of a novel method for computed tomography quantification of lumbosacral articular process displacement in dogs with and without degenerative lumbosacral stenosis

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Percutaneous endoscopic limited-lumbosacral-dorsal laminectomy in eight dogs - A cadaveric study