Title |
Anatomic relationship between the spinal accessory nerve and the jugular vein: a cadaveric study
|
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Published in |
Surgical and Radiologic Anatomy, October 2010
|
DOI | 10.1007/s00276-010-0737-y |
Pubmed ID | |
Authors |
M. Saman, P. Etebari, M. N. Pakdaman, M. L. Urken |
Abstract |
Previous studies of the course of the Spinal Accessory Nerve (SAN) and its relationship to the Internal Jugular Vein (IJV) have yielded conflicting results because of the small number of anatomic specimens and anatomic variability. Classic teaching in Head and Neck Surgery is that the SAN almost always crosses the IJV anteriorly in the upper neck. However, because of the morbidity associated with the injury to the IJV during nerve dissection, it is imperative that the surgeon is wary of the posteriorly crossing nerve. In order to further elucidate the anatomy of the SAN in relation to its surrounding structures, we have studied its anatomy at various points. Specifically, we have aimed to: (1) characterize the anatomic relationship of the SAN to the IJV at three major points: (a) within jugular foramen (JF), (b) at base of skull (BoS), and (c) at the posterior belly of the digastric muscle, (2) record the distance travelled by the SAN from the BoS to its medial to lateral crossing of the IJV, and (3) characterize the anatomy of the JF by with respect to greatest length, width, and partitioning. |
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