A 2-year old male castrated mixed breed dog presents for an altered gait after being hit by a car. On physical exam, the thoracic limbs had decreased biceps and triceps reflexes and decreased muscle tone. The pelvic limbs had hyper-reflexive patellar and gastrocnemius reflexes and increased muscle tone. Where is the spinal cord lesion?
一只2岁雄性已绝育混种犬在被车撞了之后步态改变前来就诊。体格检查时发现其前肢二头肌和三头肌反射和肌张力下降。后肢膝关节反射过度以及腓肠肌反射和肌张力上升。该犬脊椎损伤位于哪里？
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