Holt J J
Department of Otolaryngology, Marshfield Clinic, WI 54449, USA.
Laryngoscope. 1996 Apr;106(4):396-400. doi: 10.1097/00005537-199604000-00002.
This three-part study explored the difficult problem of dissecting the facial nerve through the soft tissues of the mastoid tip. The anatomic relationships of the mastoid tip tissues were measured in 20 specimens. At the stylomastoid foramen, the facial nerve lies an average of 9 mm from the digastric muscle, 11 mm from the external canal, and 21 mm from the nerve's parotid bifurcation. The histologic relationships between the nerve sheath and the mastoid tip fascial tissues were examined in 10 specimens. The tight adherence of sheath and fascial fibers prevent their easy separation. By applying this new anatomic and histologic knowledge on cadaver specimens, the author refined a technique for the safe dissection of the facial nerve through mastoid tip tissues. This technique has proven successful in the operating room.
这项分为三个部分的研究探讨了通过乳突尖软组织解剖面神经这一难题。在20个标本中测量了乳突尖组织的解剖关系。在茎乳孔处，面神经距二腹肌平均9毫米，距外耳道11毫米，距神经的腮腺分叉处21毫米。在10个标本中检查了神经鞘与乳突尖筋膜组织之间的组织学关系。鞘膜与筋膜纤维紧密粘连，不易分离。通过将这一新的解剖学和组织学知识应用于尸体标本，作者改进了一种通过乳突尖组织安全解剖面神经的技术。该技术已在手术室中证明是成功的。
