• Youngkoo Lee, Wonseok Park, Hyerim Lee, Youngsuk Choi, Sunghwan Kim, Euidong Yeo, Hongseop Lee, Kijin Jung, Byungryul Lee, Myoungjin Lee, and Woojong Kim.
• Department of Orthopaedic Surgery, College of Medicine, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Republic of Korea.
• Medicina (Kaunas). 2023 Aug 22; 59 (9).

BackgroundWe investigated whether the distribution of mechanoreceptors in three sections of the anterior talofibular ligament (ATFL) differed.MethodsThe ATFL was obtained from 29 ankles of 21 fresh-frozen cadavers and divided into fibular attachment, mid-ligament, and talar attachment parts. Histologically, mechanoreceptors were classified as Ruffini (type I), Vater-Pacini (type II), Golgi-Mazzoni (type III), and free nerve ending corpuscles (type IV); the presence of these mechanoreceptors was compared among the three ATFL sections.ResultsType I mechanoreceptors were significantly more numerous than the other receptor types. Comparing the three sections of the ATFL, the number of type I mechanoreceptors differed significantly between the mid-ligament and fibular attachment (p = 0.006), while the number of type III mechanoreceptors differed significantly between the talar and fibular attachments (p = 0.005) and between the mid-ligament and talar attachment (p = 0.011).ConclusionsThe four types of mechanoreceptors were distributed differently among the three sections of the ATFL. Type I mechanoreceptors were more numerous in all sections compared to the other receptors.

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