Staszyk Carsten, Bienert Astrid, Bäumer Wolfgang, Feige Karsten, Gasse Hagen
Institute of Anatomy, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, Hannover, Germany.
Res Vet Sci. 2008 Dec;85(3):399-406. doi: 10.1016/j.rvsc.2008.02.008. Epub 2008 Mar 26.
To provide anaesthesia of the maxillary cheek teeth, a local block of the infraorbital nerve in the pterygopalatine fossa has been suggested. The aim of this study was to re-examine the anatomy of the pterygopalatine fossa, giving special attention to relevant arteries, veins and nerves; simulate the infiltration of an anaesthetic by injecting a contrast medium; improve the injection technique to avoid puncturing of relevant anatomical structures. Five heads and two living horses were investigated using contrast medium injections and computed tomography (CT). Needles were inserted using two insertion techniques: "Palatine Bone Insertion" (PBI) and "Extraperiorbital Fat Body Insertion" (EFBI). Both techniques are suitable for achieving a consistent distribution of contrast medium around the infraorbital nerve. The periorbita prevents the contrast medium from penetrating into the intraperiorbital compartment. The EFBI-technique is most appropriate for providing a sufficient infraorbital nerve block with a minimised risk of complications.
为对上颌颊齿进行麻醉，有人建议在翼腭窝对眶下神经进行局部阻滞。本研究的目的是重新审视翼腭窝的解剖结构，特别关注相关的动脉、静脉和神经；通过注射造影剂模拟麻醉剂的浸润；改进注射技术以避免穿刺相关解剖结构。使用造影剂注射和计算机断层扫描（CT）对五个头部和两匹活马进行了研究。采用两种进针技术插入针头：“腭骨进针”（PBI）和“眶外脂肪体进针”（EFBI）。两种技术都适用于使造影剂在眶下神经周围实现一致的分布。眶骨膜可防止造影剂渗入眶内间隙。EFBI技术最适合提供充分的眶下神经阻滞，且并发症风险最小。
