Prevalence of Fibularis Tertius Muscle in a population in Spain : A Surface Anatomy Cross-sectional Study across Countries

The fibularis tertius muscle (FTM) is a rare anatomic variation. The 5 prevalence of this exclusively human structure, which is found in the anterior 6 compartment of the leg, is often underestimated, and it is believed that foot and ankle 7 conditions are more difficult to manage in patients with an FTM. The aim of this study 8 was to assess the presence of the FTM palpation and determine whether its presence is 9 associated with an individual's sex, because the exact prevalence in males and females 10 is unclear. 11 Methods: This observational cross-sectional study included 481 people (23.49% men 12 and 76.51% women) with a mean age of 23.51 ± 5.369 years, who were recruited from 13 a Pod…