Styloid Process Length Variations: An Osteological Study
Keywords:Elongated Styloid Process, Anatomic Variation, Eagle’s Syndrome
Objective. The objective of this study was to study the morphometry of the styloid process of the temporal bone and the prevalence of an elongated styloid process in relation to side and gender.
Material and Method. The present study included 200 human skulls which were procured from the rich osteological collections of the Department of Anatomy, Faculty of Medicine, University of Sarajevo. The styloid process was observed macroscopically on both sides of all the skulls and elongations, if any, were noted. The lengths of the styloid processes were measured using digital vernier calipers. The measurements were taken from the point of emergence of the process (base) up to the tip.
Results. Out of 200 specimens, only 14 cases (7%) exhibited an elongated styloid process. The mean length of the styloid process was 25.8±4.68 mm and 24.2±4.54 mm for the right and left sides, respectively. The size of the styloid process did not different significantly between the two sides (P=0.724). The mean length of the styloid process was 24.05±3.54 mm in females and 25.95±5.68 mm in males, and the difference was statistically significant (P=0.023).
Conclusion. The study and knowledge of the anatomical variations of the styloid process in the Bosnian population may help clinicians to diagnose Eagle’s syndrome. Knowledge of this disorder can prevent the worsening of the painful symptoms related to an elongated styloid process.
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