IJAR.2021.124
Type of Article: Original Research
Volume 9; Issue 2.2 (May 2021)
Page No.: 7994-8000
DOI: https://dx.doi.org/10.16965/ijar.2021.124
Elongated Styloid Process: Mapping the incidence in Greek population
Vasilopoulos Anastasios *1, Tsoucalas Gregory 2, Thomaidis Vasileios 3.
*1 Department of Anatomy, School of Medicine, Democritus University of Thrace, Alexandroupolis Greece.
2 Department of Anatomy, School of Medicine, Democritus University of Thrace, Alexandroupolis Greece.
3 Department of Anatomy, School of Medicine, Democritus University of Thrace, Alexandroupolis Greece.
Corresponding author: Vasilopoulos Anastasios, Department of Anatomy, School of Medicine, Democritus University of Thrace, Alexandroupolis Greece. E-Mail: tasosb14@gmail.com
ABSTRACT
Background: Styloid process (SP) is a needle shaped projection of the temporal bone, which lies in close proximity to several important anatomical structures of the head and neck. It attracts the attention of anatomists, otolaryngologists and head and neck surgeons, as an abnormally long SP is linked with a clinical condition known as Eagle Syndrome. There are numerous studies in the literature investigating morphometric characteristics of SP, including its length in different populations. The aim of this study is to investigate the incidence of SP elongation in Greek population and to construct an epidemiologic map showing the incidence of SP elongation across different regions of Greek territory.
Materials and methods: Two hundred and nine skulls retrieved from cemeteries across Greece were meticulously examined. Ninety-four male skulls and one-hundred and fifteen females, all of Hellenic origin. SP length was measured from the lowest inner point of the surface between the SP and the stylomastoid foramen to its tip, utilizing a digital caliper and a steel wire. Data from this study were statistically analyzed and combined with data from other studies in Greek population in order to construct a detailed epidemiologic map.
Results: The mean length was 27.26 ± 5.89 mm for the left and 27.84 ± 6.31 mm for the right SP. In males 36.4% of the left and 37.8% of the right SP were elongated. In females the incidence of SP elongation was 14.3% and 15.5% for left and right side respectively. Statistically significant association was observed between gender and SP length but not between age and SP length.
Conclusion: This study enriches the literature by adding information about elongated SP incidence in Greek population. It reviews the existing studies about SP length in Greeks and presents an epidemiologic map showing the incidence of SP elongation across different regions in Greece.
Key words: Skull, Eagle syndrome, Hellenic population, Elongated Styloid Process.
REFERENCES
[1]. Fusco DJ, Asteraki S, Spetzl RF. Eagle’s syndrome: Embryology, anatomy, and clinical management. Acta Neurochir 2012;154:1119–26.
[2]. Abuhaimed AK, Menezes RG. Anatomy, Head and Neck, Styloid Process. StatPearls 2019.
[3]. Petrović S, Jovanović I, Ugrenović S, Radovanović Z, Pešić Z, Vučković I, et al. Morphometric analysis of the stylohyoid complex. Surg Radiol Anat 2017;39:525–34.
[4]. Ferrario VF, Sigurta D, Daddona A, Dalloca L, Miani A, Tafuro F, et al. Calcification of the stylohyoid ligament: Incidence and morphoquantitative evaluations. Oral Surg Oral Med Oral Pathol 1990;69:524–9.
[5]. Badhey A, Jategaonkar A, Anglin Kovacs AJ, Kadakia S, De Deyn PP, Ducic Y, et al. Eagle syndrome: A comprehensive review. Clin Neurol Neurosurg 2017;159:34–8.
[6]. Eagle WW. Elongated Styloid Processes: Report of Two Cases. Arch Otolaryngol 1937;25:584–7.
[7]. Piagkou MN, Anagnostopoulou S, Kouladouros K, Piagkos G. Eagle’s syndrome: A review of the literature. Clin Anat 2009;22:545–58.
[8]. Gracco A, Stefani A De, Bruno G, Balasso P, Alessandri-Bonetti G, Stellini E. Elongated styloid process evaluation on digital panoramic radiograph in a North Italian population. J Clin Exp Dent 2017;9:400–4.
[9]. Vadgaonkar R, Murlimanju BV, Prabhu LV, Rai R, Pai MM, Tonse M, et al. Morphological study of styloid process of the temporal bone and its clinical implications. Anat Cell Biol 2015;48:195.
[10]. Vieira EM, Guedes OA, Morais SD, Musis CR, Albuquerque PA, Borges ÁH. Prevalence of elongated styloid process in a central brazilian population. J Clin Diagn Res 2015;9:90–2.
[11]. Balcioglu HA, Kilic C, Akyol M, Ozan H, Kokten G. Length of the styloid process and anatomical implications for Eagle’s syndrome. Folia Morphol (Warsz) 2009;68:265–70.
[12]. Natsis K, Repousi E, Noussios G, Papathanasiou E, Apostolidis S, Piagkou M. The styloid process in a Greek population: an anatomical study with clinical implications. Anat Sci Int 2014;90:67–74.
[13]. Zokaris N, Siska I, Natsis K, Piagkou M, Lazaridis N, Skolka A, et al. Investigation of the styloid process length in a Greek population. Folia Morphol (Warsz) 2019;78:378–88.
[14]. Jung T, Tschernitschek H, Hippen H, Schneider B, Borchers L. Elongated styloid process: When is it really elongated? Dentomaxillofac Radiol. 2004;33:119–24.
[15]. Ayyildiz VA, Senel FA, Dursun A, Ozturk K. Morphometric examination of the styloid process by 3D-CT in patients with Eagle syndrome. Eur Arch Otorhinolaryngol 2019;276:3453–9.
[16]. Mayrink G, Figueiredo EP, Sato FR, Moreira RW. Cervicofacial pain associated with Eagle’s syndrome misdiagnosed as trigeminal neuralgia. Oral Maxillofac Surg. 2012;16:207–10.
[17]. Kumar P, Rayamane AP, Subbaramaiah M. Sudden death due to eagle syndrome: A case report. Am J Forensic Med Pathol 2013;34:231–3.
