Fadda A, Lang J, Forterre F
Department of Clinical Neurology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.
Vet Comp Orthop Traumatol. 2013;26(4):318-22. doi: 10.3415/VCOT-12-08-0106. Epub 2013 Apr 10.
This case report describes the magnetic resonance imaging (MRI) findings and the treatment of a far lateral extrusion of disc material at the sixth and seventh lumbar vertebrae (L6-L7) in a five-year-old male Alpine Dachsbracke dog referred to our hospital for investigation of the complaint of a one week progressive lameness in the left pelvic limb and poorly localized back pain. An extra-foraminal left lateral disc herniation impinging on the sixth lumbar nerve root was diagnosed by MRI examinations. Due to the far lateral position of the extruded disc material on MRI, surgical opening of the spinal canal was not necessary. Removal of the herniated soft disc material impinging on the L6 nerve root, and fenestration of the L6-L7 disc was performed laterally. To the author's knowledge 'far-lateral' disc herniation beyond the neuroforamen without any spinal canal contact has not been described in dogs until now. A complete recovery with no evidence of pain was achieved only after a couple of weeks after surgery. We acknowledge that it is possible that other pathological mechanisms may have contributed to clinical signs and to a delayed recovery.
本病例报告描述了一只5岁雄性高山腊肠犬第六和第七腰椎（L6-L7）椎间盘物质远外侧突出的磁共振成像（MRI）表现及治疗情况。该犬因左后肢渐进性跛行一周及定位不清的背部疼痛前来我院检查。MRI检查诊断为椎间孔外左侧椎间盘突出压迫第六腰神经根。由于MRI显示突出的椎间盘物质位于远外侧，无需进行椎管手术切开。通过外侧手术切除压迫L6神经根的突出软性椎间盘物质，并对L6-L7椎间盘进行开窗。据作者所知，此前尚未有犬类出现神经孔外“远外侧”椎间盘突出且不与椎管接触的相关描述。术后几周才实现完全康复且无疼痛迹象。我们承认，可能有其他病理机制导致了临床症状及恢复延迟。
