The lateral plantar nerve passes through the tarsal tunnel between the abductor hallusis muscle and the quadratus planus muscle. This nerve can become trapped causing pain in under the heel on the inside (medial aspect) and up into the inside of the ankle.
Treatment Of Lateral Plantar Nerve Entrapment
Rest
NSAID's
The arch of the foot can be supported with tape.
Orthotics may be prescribed to correct poor foot biomechanics.