Abstract：
Choloepus didactylus (two-toed sloth) is a Xenarthran mammal whose morphology has so far been little studied. Given the increasing number of sloths requiring clinical and surgical interventions, this lack of clarity regarding anatomical features and landmarks has had a negative impact on veterinary decision-making for this species. We therefore sought to describe the topography of the medullary cone (MC) of Choloepus didactylus in order to provide guidance to qualified professionals on the ideal access for locoregional anesthesia. In evaluating four specimens, radiographs and dissections revealed that Choloepus didactylus has three lumbar vertebrae and five sacral vertebrae. The lumbar intumescence is located between T14 and the cranial half of L2, the medullary cone is located between the caudal half of L2 and L3, with an average length of 2.26 cm, and the cauda equina extends from S1 to S5. Based on these anatomical findings, we propose that the lumbosacral region would be the most suitable target for epidural anesthesia in Choloepus didactylus.
摘要：
Choloepusdidactylus（双趾树懒）是Xenarthran哺乳动物，其形态迄今为止很少被研究。鉴于越来越多的树懒需要临床和手术干预，对于该物种的解剖学特征和地标缺乏清晰度,对兽医决策产生了负面影响.因此，我们试图描述Choloepusdidactylus的髓锥（MC）的地形，以便为合格的专业人员提供有关局部麻醉理想途径的指导。在评估四个样本时，X光片和解剖显示，Choloepus有三个腰椎和五个骶椎。腰椎膨胀位于T14和L2的颅半部之间，髓锥位于L2和L3的尾半部之间，平均长度为2.26厘米，马尾从S1延伸到S5.基于这些解剖学发现,我们建议腰骶部区域将是最适合的硬膜外麻醉目标。
