Applied anatomy of the mastoid segment of facial nerve
WANG Jun-Yu, DANG Rui-Shan, LU Yi-Cheng, LIAO Jian-Chun
Chinese Journal of Clinical Anatomy ›› 2011, Vol. 29 ›› Issue (2) : 131-134.
Applied anatomy of the mastoid segment of facial nerve
Objectives To provide anatomic data for identifying the mastoid segment of facial nerve during mastoidectomy through the lateral approaches. Methods The research was applied on 8 cadaveric specimens. Electric drill was used to remove the superficial bone of the mastoid process to expose the underlying semicircular canals and the mastoid segment of the facial nerve. The length and diameter of the vertical segment of the facial nerve were measured. The distances from the vertical segment of the facial nerve to surrounding structures were measured. Results The length of the mastoid segment of the facial nerve was about （11.04±1.03）mm，and the diameter （2.29±0.39）mm. The distance from the beginning of the mastoid segment of the facial nerve to sigmoid sinus, Helen's spine, durra mater of the posterior fossa, the junction of sigmoid sinus and transverse sinus, posterior semicircular canal was（9.41±2.06）mm,（15.61±2.11）mm,（5.96±1.51）mm,（20.20±3.44）mm,（3.84±0.14）mm separately. The distance from the end of the mastoid segment of the facial nerve to the sigmoid sinus, Helen's spine, mastoid tip, durra mater of the posterior fossa, the junction of sigmoid sinus and transverse sinus was（7.05±2.01）mm,（20.32±2.69）mm,（16.48±2.48）mm,（7.97±2.61）mm, and (27.38±4.21)mm respectively. Conclusions Horizontal semicircular canal, posterior semicircular canal and the digastric ridge are important structures for identifying the mastoid segment of the facial nerve. The mastoid segment of facial nerve lies in the triangle formed by the posterior semicircular canal, the horizontal semicircular canal and the anterior edge of the digastric ridge.
Mastoid segment of the facial nerve / Horizontal semicircular canal / Posterior semicircular canal / Digastric ridge / Applied anatomy
[1] Zubay G, Porter RW, Spetzler RF. Transpetrosal approaches
[J]. Operative Techniques in Neurosurgery, 2001，4(1):24-29.
[2] Darrouzet V, Franco-Vidal V, Hilton M, et al. Surgery of cerebellopontine angle epidermoid cysts :role of the widened retrolabyrinthine approach combined with endoscopy
[J]. Otolaryngology Head and Neck Surg, 2004,131(1):120-125.
[3] Duckworth EA, Silva FE, Chandler JP, et al. Temporal bone dissection for neurosurgery residents: identifying the essential concepts and fundamental techniques for success
[J]. Surg Neurol, 2008,69 (1):93-98.
[4] Friedman RA, Brachmann DE. Transcochlear approach
[J]. Operative Techniques in Neurosurgery, 1999, 2(1):39-45.
[5] Silverstein H, Jackson LE. Vestibular nerve section
[J]. Otolaryngol Clin North Am, 2002, 35(3):655-673.
[6] Goksu N, Yilmaz M, Bayramoglu I, et al. Combined retrosigmoid retrolabyrinthine vestibular nerve section: results of our experience over 10 years
[J]. Otol Neurotol, 2005, 26(3):481-483.
[7] Maceri DR, Giannotta SL. The combined retrolabyrinthine/retrosigmoid approach
[J]. Operative Techniques in Neurosurgery, 1999, 2(1):48-51.
[8] Chanda A, Nanda A. Partial labyrinthectomy petrous apicectomy approach to the petroclival region: an anatomic and technical study
[J]. Neurosurgery, 2002, 51(1):147-159.
[9] Liu JK, Sameshima T, Gottfried ON , et al. The combined transmastoid retro- and infralabyrinthine transjugular transcondylar transtubercular high cervical approach for resection of glomus jugular tumors
[J].Neurosurgery, 2006，59(1 Suppl 1): 115-125.
[10]Nager GT, Proctor B. The facial canal: normal anatomy, variations and anomalies. II. Anatomical variations and anomalies involving the facial canal
[J]. Ann Otol Rhinol Laryngol Suppl, 1982，97(1):45-61.
[11]田广永, 徐达传, 黄德亮. 面神经减压手术中面神经定位
[J]. 广东医学, 2007, 28 (5): 729-730.
[12]迟放鲁, 王 碌, 袁雅生, 等.中耳手术中的面神经定位
[J] . 中华耳鼻咽喉头颈外科杂志, 2006，41(1):5-8.
[13] 朱杭军, 廖建春, 王海青.鼓索神经颞骨部的解剖及临床应用
[J].解剖与临床, 2003,8(4): 201-202.
[14] 何承诚, 李家栋,陈乾美. 中耳术后迟发性面瘫相关因素分析
[J].听力学及言语疾病杂志, 2007，15(2)：156-157.
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