Carotid Artery
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Study results from M.L. Pensak et al provide new insights into angiology
2009 JUL 28 - (NewsRx.com) -- "We describe our cadaveric dissections and clinical findings that address anterior and ventral limitations imposed by the trigeminal nerve. Particularly, we identify the trigeminal caroticodural fold, the vestment of dura that traverses the space between the nerve and the internal carotid artery," investigators in the United States report. "We address the effect of mobilization of this fold to optimize access in Kawase's space when approaching the clivus and posterior fossa. Histological study and cadaveric dissections were performed to examine this regional anatomy. Our clinical series (2002 to 2007) includes 30 patients who underwent anterior petrosectomy as part of more complex approaches for lesions of the skull base. Histological and dissection specimens showed a dense fibrous confluence lateral to the trigeminal ganglion and portions of the trigeminal nerve that we called the trigeminal caroticodural fold. This fold was prominent in 18 patients, ill-defined in six, and absent in six patients. Incision of the trigeminal caroticodural fold permitted between 1 mm and 3 mm of additional exposure for drilling in Kawase's space without direct trauma to V-3. Our study highlights the existence of a dural tethering of the trigeminal nerve and ganglion relevant to surgical exposure of Kawase's space. The regional dural anatomy that contributes to the trigeminal caroticodural fold is complex with subtle variances," wrote M.L. Pensak and colleagues. The researchers concluded: "We suggest that identification of this fold and its sharp dissection allows mobilization of the trigeminal ganglion and nerve without violation Of V-3, and ultimately can improve the transpetrosal access to the upper clivus and posterior fossa via this corridor.." Pensak and colleagues published their study in Laryngoscope (The Enigmatic Trigeminal Caroticodural Fold: An Anatomic Description and Surgical Relevance to Anterior Petrosectomy. Laryngoscope, 2009;119(6):1060-1066). For additional information, contact M.L. Pensak, Editorial Off, POB 670515, Cincinnati, OH 45267, USA. The publisher of the journal Laryngoscope can be contacted at: John Wiley & Sons Inc., 111 River St., Hoboken, NJ 07030, USA. Keywords: United States, Cincinnati, Anatomy, Angiology, Internal Carotid Artery, Laryngoscope, Medical Device. This article was prepared by Life Science Weekly editors from staff and other reports. Copyright 2009, Life Science Weekly via NewsRx.com.
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