Fig. 8

Modes of origins of the medial calcaneal nerve: Type I a medial calcaneal nerve originating from the tibial nerve; Type II a medial calcaneal nerve originating from the lateral plantar nerve; Type III two medial calcaneal nerves, one originated from the tibial nerve, and the other originated from lateral plantar nerve; Type IV two medial calcaneal nerves, both originated from tibial nerve; Type V two medial calcaneal nerves, with a common origin on the tibial nerve; Type VI three medial calcaneal nerves, one originated from the tibial nerve and the other two originated from the lateral plantar nerve