{"id":3091,"date":"2025-09-04T01:12:44","date_gmt":"2025-09-04T01:12:44","guid":{"rendered":"https:\/\/www.ijmhr.org\/IntJAnatRes\/?page_id=3091"},"modified":"2025-09-04T01:12:44","modified_gmt":"2025-09-04T01:12:44","slug":"ijar-2025-213","status":"publish","type":"page","link":"https:\/\/www.ijmhr.org\/IntJAnatRes\/ijar-2025-213\/","title":{"rendered":"IJAR.2025.213"},"content":{"rendered":"<div class=\"su-row\"><div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\"><div class=\"su-button-center\"><a href=\"https:\/\/www.ijmhr.org\/ijar.13.3\/IJAR.2025.213.pdf\" class=\"su-button su-button-style-default\" style=\"color:#FFFFFF;background-color:#6b0e00;border-color:#560c00;border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:6px 16px;font-size:13px;line-height:20px;border-color:#98574d;border-radius:5px;text-shadow:none\"><i class=\"sui sui-cloud-download\" style=\"font-size:13px;color:#FFFFFF\"><\/i> DOWNLOAD PDF<\/span><\/a><\/div><\/div><\/div> <div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\"><div class=\"su-button-center\"><a href=\"https:\/\/ijmhr.org\/ijar-vol-13-3.htm\" class=\"su-button su-button-style-default\" style=\"color:#FFFFFF;background-color:#6b0e00;border-color:#560c00;border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:6px 16px;font-size:13px;line-height:20px;border-color:#98574d;border-radius:5px;text-shadow:none\"><i class=\"sui sui-book\" style=\"font-size:13px;color:#FFFFFF\"><\/i> Table of Contents<\/span><\/a><\/div><\/div><\/div><\/div>\n<h3 style=\"text-align: justify;\"><strong>Type of Article:<\/strong> \u00a0Original Research<\/h3>\n<h3 style=\"text-align: justify;\"><strong>Volume 13; Issue 3 (September 2025)<\/strong><\/h3>\n<h3 style=\"text-align: justify;\"><strong>Page No.:<\/strong> 9326-9331<\/h3>\n<h3 style=\"text-align: justify;\"><strong>DOI:\u00a0<\/strong>https:\/\/dx.doi.org\/10.16965\/ijar.2025.213<\/h3>\n<h3 style=\"text-align: justify;\">Morphometric Analysis of Accessory Vessel Grooves on the Frontal Bone: First Documented Cases from Namibia<\/h3>\n<p><strong>Jan Van der Merwe <sup>1<\/sup>, Quenton Wessels *<sup>1<\/sup>, Anneli Poolman <sup>1<\/sup>.<\/strong><\/p>\n<p><sup>1 <\/sup>Division of Anatomy, School of Medicine, University of Namibia, Windhoek, Namibia.<\/p>\n<p><strong>ORCiD:<\/strong><\/p>\n<p><strong>Jan Van der Merwe: <\/strong>https:\/\/orcid.org\/0009-0003-5934-7690<\/p>\n<p><strong>Quenton Wessels: \u00a0<\/strong>https:\/\/orcid.org\/0000-0001-8539-5459<\/p>\n<p><strong>Anneli Poolman: <\/strong>https:\/\/orcid.org\/0000-0002-6564-7687<\/p>\n<p style=\"text-align: justify;\"><strong>Corresponding author:<\/strong> Quenton Wessels, Professor, Division of Anatomy, School of Medicine, University of Namibia, Bach Street, Windhoek, Namibia. <strong>E-Mail:<\/strong> qwessels@unam.na<\/p>\n<p><strong>ABSTRACT<\/strong><\/p>\n<p style=\"text-align: justify;\">This paper presents the first documented cases of accessory vessel grooves on the external cranial vault from Namibia. These nonmetric anatomical variants were observed on two dry skulls housed at the Namibian Police Forensic Science Institute in Windhoek. A morphometric analysis was conducted to document the precise location and measurements of these grooves relative to established cranial osteological landmarks. Accurate identification of such traits is critical in distinguishing normal anatomical variation from cranial trauma, pathological lesions, or taphonomic damage during forensic analysis. This study contributes to the limited literature on cranial vascular imprint variation in African skeletal samples and highlights the need for further research on the morphometric characterization of accessory vessel grooves in forensic and bioarchaeological contents.<\/p>\n<p style=\"text-align: justify;\"><strong>Keywords:<\/strong> Accessory vessel grooves, Frontal bone, Nonmetric trait, Forensic anthropology, Supraorbital artery, Namibia.<\/p>\n<p style=\"text-align: justify;\"><strong>REFERENCES<\/strong><\/p>\n<p style=\"text-align: justify;\">[1]. \u00c7irak MT, Sarbak A, \u00d6zdemir F. Morphometric analysis of accessory vessel grooves (AVG) in the skulls of the ancient Spradon population: An Anthropological approach. Int J Morph 2021;39(3):716-720.<br \/>https:\/\/doi.org\/10.4067\/S0717-95022021000300716<br \/>[2]. Mann W.M, Hunt DR. Non-metric traits and anatomical variants that can mimic trauma in the human skeleton. Forensic Sci Int 2019;301:202-224.<br \/>https:\/\/doi.org\/10.1016\/j.forsciint.2019.05.039<br \/>PMid:31176138<br \/>[3]. Dixon AF. On certain markings, due to nerves and blood-vessels, upon the cranial vault: their significance and the relative frequency of their occurrence in the different races of mankind. J Anat Physiol 1904;38(4):377-398.<br \/>https:\/\/doi.org\/10.1007\/BF03171894<br \/>PMid:17232612 PMCid:PMC1287349<br \/>[4]. Schunk H, Maruyama Y. Two vascular grooves of the external table of the skull which simulate fractures. Acta Radiologica 1960;54(3):186-194.<br \/>https:\/\/doi.org\/10.1177\/028418516005400304<br \/>https:\/\/doi.org\/10.3109\/00016926009172539<br \/>PMid:13748987<br \/>[5]. Ashwini LS, Mohandas RK, Sharmila S, Somayaji SN. Morphological and Morphometric Analysis of supraorbital foramen- and supraorbital notch: A study on dry human skulls. Oman Med J 2012;27(2):129-133.<br \/>https:\/\/doi.org\/10.5001\/omj.2012.27<br \/>PMid:22496938 PMCid:PMC3321347<br \/>[6]. Tomaszewska A, Kwiatkowska B, Jankauskas R. The localization of the supraorbital notch or foramen is crucial for headache and supraorbital neuralgia avoiding and treatment. Anat Rec (Hoboken) 2012;295(9):1494-1503.<br \/>https:\/\/doi.org\/10.1002\/ar.22534<br \/>PMid:22807312<br \/>[7]. Nanayakkara D, Manawaratne R, Sampath H, Vadysinghe A, Peiris R. Supraorbital nerve exits: positional variations and localization relative to surgical landmarks. Anat Cell Biol 2018;51(1):19-24.<br \/>https:\/\/doi.org\/10.5115\/acb.2018.51.1.19<br \/>PMid:29644106 PMCid:PMC5890013<br \/>[8]. Kabacki AG, Bozkir MG. Dimension, location and clinical importance of supraorbital foramen and notch: A combined cadaveric and dry skull study. Aesthetic Plast Surg 2024;49(1):322-333.<br \/>https:\/\/doi.org\/10.1007\/s00266-024-04196-7<br \/>PMid:38951229 PMCid:PMC11799115<br \/>[9]. Fenner FJ. The Australian Aboriginal skull: Its non-metrical morphological characters. Trans R Soc S Aust 1939;63(1):248-305.<br \/>[10]. Koz\u0142owski T. An anthropologist&#8217;s reflections over the identification of the bone remains discovered in Frombork Cathedral and regarded as belonging to Nicolaus Copernicus. An attempt at critical evaluation. In The Nicolaus Copernicus grave mystery. Edited by Kokowski M: Krak\u00f3w: Polish Academy of Arts and Sciences; 2015:59-79.<br \/>[11]. Ossenberg NS. The influence of artificial cranial deformation on discontinuous morphological traits. Am J Phys Anthropol 1970;33;357-371.<br \/>https:\/\/doi.org\/10.1002\/ajpa.1330330310<br \/>[12]. Palamenghi A, Borlando A, De Angelis D, Sforza C, Cattaneo C, Gibelli D. Exploring the potential of cranial non-metric traits as a tool for personal identification: the never-ending dilemma. Int J Leg Med 2021;135(6):2509-2518.<br \/>https:\/\/doi.org\/10.1007\/s00414-021-02654-4<br \/>PMid:34275004 PMCid:PMC8523454<br \/>[13]. Jin SW, Sim KB, Kim SD. Development and growth of the normal cranial vault: An Embryologic Review. J Korean Neurosurg Soc 2016; 59(3):192-196.<br \/>https:\/\/doi.org\/10.3340\/jkns.2016.59.3.192<br \/>PMid:27226848 PMCid:PMC4877539<br \/>[14]. Kareem ZM, Muthana A, Hassan SF, Ahmed FO, Hadi RT, Algburi HA, Atallah O, Ismail M, Hoz SS. Supraorbital artery: Anatomical variations and neurosurgical applications. Surg Neurol Int 2023;14(318):1-7.<br \/>https:\/\/doi.org\/10.25259\/SNI_597_2023<br \/>PMid:37810326 PMCid:PMC10559381<br \/>[15]. Sheikh EE, Nasr WF, Ibrahim AAS. Anatomical variations of supraorbital notch and foramen: a study on human adult- Egyptian skulls. Eur J Plast Surg 2014;37:135-140.<br \/>https:\/\/doi.org\/10.1007\/s00238-013-0903-7<br \/>[16]. Hui KTP, Lam WMW, Chau MT. Why does the fracture not heal? Vascular channel mimicking skull fracture. HK J Paediatr (New Series) 2007;16:184-187.<br \/>[17]. Napier A, De Jesus O, Taylor A. Supraorbital nerve block. StatPearls [Internet]. Treasure Island (FL). Available from: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK536937\/<br \/>[18]. Patel J, Iwanaga J, Kitagawa N, Dumont AS, Tubbs RS. Unreported variant foramen of the frontal bone: the latero-orbital foramen. Surg Radiol Anat 2024;46(2):181-184.<br \/>https:\/\/doi.org\/10.1007\/s00276-023-03273-x<br \/>PMid:38265491<\/p>\n<p style=\"text-align: justify;\">\n\t\t\t <div class=\"promo1\" style=\"background-color:#f7f7f7; border-color: #6b0e00 #e8e6e6 #e8e6e6;\">\n             \t <span style=\"color: #800000;\"><strong>Cite this article:<\/strong><\/span> Jan Van der Merwe, Quenton Wessels, Anneli Poolman. Morphometric Analysis of Accessory Vessel Grooves on the Frontal Bone: First Documented Cases from Namibia. Int J Anat Res 2025;13(3):9326-9331. <strong>DOI:\u00a0<\/strong>10.16965\/ijar.2025.213\u00a0 \n             <\/div>\t\n\t\t\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Type of Article: \u00a0Original Research Volume 13; Issue 3 (September 2025) Page No.: 9326-9331 DOI:\u00a0https:\/\/dx.doi.org\/10.16965\/ijar.2025.213 Morphometric Analysis of Accessory Vessel Grooves on the Frontal Bone: First Documented Cases from Namibia Jan Van der Merwe 1, Quenton Wessels *1, Anneli Poolman 1. 1 Division of Anatomy, School of Medicine, University of Namibia, Windhoek, Namibia. ORCiD: Jan<br \/><a class=\"moretag\" href=\"https:\/\/www.ijmhr.org\/IntJAnatRes\/ijar-2025-213\/\">+ Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-3091","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/pages\/3091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/comments?post=3091"}],"version-history":[{"count":1,"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/pages\/3091\/revisions"}],"predecessor-version":[{"id":3104,"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/pages\/3091\/revisions\/3104"}],"wp:attachment":[{"href":"https:\/\/www.ijmhr.org\/IntJAnatRes\/wp-json\/wp\/v2\/media?parent=3091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}