The Deltoid Ligament or medial ankle ligament is part of the medial ankle complex. This uncommon ligamentous ankle sprain of eversion occurs when eversion forces and external rotation occur at the foot or ankle. Deltoid ligament injuries include deltoid ligament sprain, deltoid avulsion, and instability. Deltoid and ligamentous sprains can alter proprioception. Repeated medial ankle sprains can lead to deltoid instability.
Medial ankle injuries to the deltoid ligament need a proper rehabilitation program to ensure that deltoid instability doesn’t occur.
The deltoid ligament, when injured, usually is associated with other foot and ankle injuries such as high ankle sprains, deltoid avulsion fracture, and ankle instability. Structures of the medial ankle complex can become injures, such as the tibialis posterior, flexor hallucis longus, and the saphenous nerve.