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Three-Dimensional Topography of the Supratrochlear Nerve With Reference to the Lacrimal Caruncle, and Its Danger Zone in Asians

Authors
 Gil, Young-Chun  ;  Lee, Shin-Hyo  ;  Shin, Kang-Jae  ;  Song, Wu-Chul  ;  Koh, Ki-Seok  ;  Shin, Hyun Jin 
Citation
 Dermatologic Surgery, Vol.43(12) : 1458-1465, 2017 
Journal Title
 Dermatologic Surgery 
ISSN
 1076-0512 
Issue Date
2017
MeSH
Adult ; Aged ; Aged, 80 and over ; Asian Continental Ancestry Group ; Cadaver ; Dermatologic Surgical Procedures/adverse effects* ; Dissection ; Female ; Forehead/anatomy & histology ; Forehead/innervation* ; Forehead/surgery ; Humans ; Lacrimal Apparatus/anatomy & histology ; Male ; Middle Aged ; Reconstructive Surgical Procedures/adverse effects ; Trigeminal Nerve/anatomy & histology* ; Trigeminal Nerve/surgery ; Trigeminal Nerve Injuries/etiology ; Trigeminal Nerve Injuries/prevention & control*
Abstract
BACKGROUND: The supratrochlear nerve (STN) is relatively superficial and therefore vulnerable to iatrogenic injury. OBJECTIVE: To elucidate the course of STN with reference to the lacrimal caruncle, with the aim of preventing nerve injury during surgery in the forehead region. MATERIALS AND METHODS: Thirty-four hemifaces from 18 Korean cadavers were dissected. The vertical line through the apex of lacrimal caruncle and the horizontal line through the supraorbital margin were used as horizontal and vertical reference lines, respectively. The course of STN in the frontal view and the point at which it pierced the overlaying musculature were examined. RESULTS: After exiting the corrugator muscle cushion, the STN enters the subcutaneous plane by piercing the frontalis muscle. These piercing points occurred at mean horizontal and vertical distances relative to the medial branch of the STN of 9.2 and 9.6 mm, respectively; the corresponding distances for the lateral branch of the STN were 1.1 and 15.3 mm, respectively. CONCLUSION: When performing surgery in the medial forehead region, the surgeon must ensure that the dissection plane of forehead tissue is more superficial: superiorly within 1.5 cm from the supraorbital margin and medially within 1.0 cm from the vertical line through the apex of lacrimal caruncle.
Full Text
http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&AN=00042728-201712000-00008&LSLINK=80&D=ovft
DOI
10.1097/DSS.0000000000001217
Appears in Collections:
2. College of Dentistry (치과대학) > Others (기타) > 1. Journal Papers
Yonsei Authors
Gil, Young Chun(길영천)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/161766
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