The lower end of the calf shank extends upwardly, and initially anteriorly therefore into reversely curved portion (75) of the calf shank leading to an upstanding upper end thereof.

• 小腿胫的下端向上延伸，并且起初向前延伸，从而延伸成为小腿胫的引向其直立上端的反向弯曲部分(75)。