The medial longitudinal arch is a concave arch that is located on the medial aspect of the foot between the head of the first metatarsal and the calcaneal tuberosity. The height of the arch is usually 1cm.


Pes cavus is the name for a high arch. Causes include Charcot-Marie-Tooth disease, muscle imbalance, neurologic disorders, and tethered spinal cord or it may be idiopathic

Pes planus is the name for a low arch or flat foot. Causes include trauma, posterior tibial tendon rupture, Achilles tendon rupture, rheumatoid arthritis, and Charcot arthropathy or it may be idiopathic.