In the palmar/plantar part of the hoof, the periople is thicker and more rubbery over the heels, and it merges with frog material.
en.wikipedia.org The primary regions with thick aponeurosis are in the ventral abdominal region, the dorsal lumbar region, and the palmar and plantar region.
en.wikipedia.org Other features include a single (simian) palmar crease, long, slender fingers, flat feet and cryptorchidism (in males).
en.wikipedia.org The syndrome may also include various dermatoglyphics, including transverse flexion creases, distal axial triradius, increased whorls and arches on digits, and a single palmar crease.
en.wikipedia.org The endoscopic methods do not divide the subcutaneous tissues or the palmar fascia to the same degree as the open method does.
en.wikipedia.org