Department of Small Animal Clinical Sciences, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, TAMU 4474, College Station, TX 77843-4474, USA.
MedVet Dayton, 2714 Springboro West, Moraine, OH 45439, USA; BluePearl North Hills, PA, USA.
Vet Clin North Am Small Anim Pract. 2021 Mar;51(2):357-364. doi: 10.1016/j.cvsm.2020.12.003.
Although lameness of the thoracic limb typically is due to orthopedic disease, there are several important neurologic conditions that result in lameness. Neurologic diseases cause lameness due to disease of the nerves, nerve roots, spinal cord, or muscles. Common differentials include lateralized intervertebral disc extrusions, caudal cervical spondylomyelopathy (wobbler disease), brachial plexus avulsion, neuritis, and peripheral nerve sheath tumors. Many of these diseases compress or destroy the nerve roots of the cervical intumescence, resulting in non-weight-bearing lameness, or root signature. Advanced diagnostics, such as magnetic resonance imaging, are necessary in these cases to determine the underlying cause.
尽管胸肢跛行通常是由骨科疾病引起的，但也有一些重要的神经系统疾病会导致跛行。神经系统疾病导致跛行是由于神经、神经根、脊髓或肌肉的疾病引起的。常见的鉴别诊断包括侧方椎间盘突出、颈椎脊髓病（摇摆病）、臂丛神经撕脱、神经炎和周围神经鞘肿瘤。这些疾病中的许多都会压迫或破坏颈椎隆起处的神经根，导致非承重性跛行或神经根特征。在这些情况下，需要进行高级诊断，如磁共振成像，以确定潜在的原因。
