Anatomy
Tarsal bone, wedge-shaped, articulates forward with 3rd metatarsal, in with intermediate/middle cuneiform, out with cuboid, up/proximally with navicular.
Vignette
The tarsal and metatarsal bones, with associated ligaments and muscles, form transverse and longitudinal arches (the medial longitudinal arch is the more elevated and elastic than lateral longitudinal, which is relatively rigid/locked), which act as springs, shock absorbers and weight distributors, allowing soft landings and explosive take-off.
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