Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers
The retrolaminar block is a regional anaesthetic technique, first developed in humans, in which the local anaesthetic is deposited directly onto the dorsal aspect of the thoracic or lumbar vertebral lamina. This study aims to evaluate the distribution of landmark-guided thoracolumbar retrolaminar in...
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MDPI AG
2023-09-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/13/19/3008 |
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| author | Julia Pentsou Michail Vagias Thomas Davies Séamus Hoey Vilhelmiina Huuskonen |
| author_facet | Julia Pentsou Michail Vagias Thomas Davies Séamus Hoey Vilhelmiina Huuskonen |
| author_sort | Julia Pentsou |
| collection | DOAJ |
| description | The retrolaminar block is a regional anaesthetic technique, first developed in humans, in which the local anaesthetic is deposited directly onto the dorsal aspect of the thoracic or lumbar vertebral lamina. This study aims to evaluate the distribution of landmark-guided thoracolumbar retrolaminar injections in greyhound cadavers. Thirteen injections of contrast-dye solution were performed in eight cadavers at the level of the twelfth thoracic vertebra (T12), with either 20 mL (n = 8, high volume, HV) or 10 mL (n = 5, low volume, LV) per site. The spread of the injectate was evaluated through computed tomography and transverse anatomical dissection. The groups were compared using the Mann–Whitney U test. The median (range) of the extent of the spread was 4 (2–5) and 3 (2–4) intervertebral foramina in the LV and HV groups, respectively. The median (range) of the spread along the retrolaminar space was 3 (2–3) retrolaminar segments in the LV and 3 (2–4) in the HV group. Epidural and retroperitoneal spread was identified in seven cadavers. Following landmark-guided retrolaminar injections, the injectate spread both in the retrolaminar and paravertebral spaces, without any obvious association between the volume of injectate and the extent of the spread. Further studies are warranted to determine the clinical efficacy of the technique. |
| first_indexed | 2024-03-10T21:50:25Z |
| format | Article |
| id | doaj.art-3e858028f20d4cbe89e2a5c3c8a01bf4 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T21:50:25Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-3e858028f20d4cbe89e2a5c3c8a01bf42023-11-19T13:58:57ZengMDPI AGAnimals2076-26152023-09-011319300810.3390/ani13193008Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine CadaversJulia Pentsou0Michail Vagias1Thomas Davies2Séamus Hoey3Vilhelmiina Huuskonen4Department of Veterinary Anaesthesia and Analgesia, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UKDepartment of Small Animal Surgery, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UKBristol Vet Specialists, Unit 10, More Plus Central Park, Madison Way, Severn Beach, Bristol BS35 4ER, UKEquine Clinical Studies, Diagnostic Imaging and Anaesthesia, UCD School of Veterinary Medicine, University College Dublin, D04 W6F6 Dublin, IrelandEquine Clinical Studies, Diagnostic Imaging and Anaesthesia, UCD School of Veterinary Medicine, University College Dublin, D04 W6F6 Dublin, IrelandThe retrolaminar block is a regional anaesthetic technique, first developed in humans, in which the local anaesthetic is deposited directly onto the dorsal aspect of the thoracic or lumbar vertebral lamina. This study aims to evaluate the distribution of landmark-guided thoracolumbar retrolaminar injections in greyhound cadavers. Thirteen injections of contrast-dye solution were performed in eight cadavers at the level of the twelfth thoracic vertebra (T12), with either 20 mL (n = 8, high volume, HV) or 10 mL (n = 5, low volume, LV) per site. The spread of the injectate was evaluated through computed tomography and transverse anatomical dissection. The groups were compared using the Mann–Whitney U test. The median (range) of the extent of the spread was 4 (2–5) and 3 (2–4) intervertebral foramina in the LV and HV groups, respectively. The median (range) of the spread along the retrolaminar space was 3 (2–3) retrolaminar segments in the LV and 3 (2–4) in the HV group. Epidural and retroperitoneal spread was identified in seven cadavers. Following landmark-guided retrolaminar injections, the injectate spread both in the retrolaminar and paravertebral spaces, without any obvious association between the volume of injectate and the extent of the spread. Further studies are warranted to determine the clinical efficacy of the technique.https://www.mdpi.com/2076-2615/13/19/3008analgesiadogsspinal surgeryhemilaminectomyretrolaminar block |
| spellingShingle | Julia Pentsou Michail Vagias Thomas Davies Séamus Hoey Vilhelmiina Huuskonen Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers Animals analgesia dogs spinal surgery hemilaminectomy retrolaminar block |
| title | Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers |
| title_full | Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers |
| title_fullStr | Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers |
| title_full_unstemmed | Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers |
| title_short | Thoracolumbar Retrolaminar Block: Anatomical and Radiological Study of Injectate Pattern Distribution in Canine Cadavers |
| title_sort | thoracolumbar retrolaminar block anatomical and radiological study of injectate pattern distribution in canine cadavers |
| topic | analgesia dogs spinal surgery hemilaminectomy retrolaminar block |
| url | https://www.mdpi.com/2076-2615/13/19/3008 |
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