Toe flexion flexor hallucis brevis

This is a drill to help guide movement of the large (great) toe by moving at the ball of the foot rather than at the far joint of the toe. Being able to control the great toe in this manner requires good mind-muscle (neuromuscular) control of flexor hallucis brevis muscle. Improved control of this muscle encourages greater support of the plantar fascia and can reduce stressful irritation often leading to common foot and ankle complications.

[joe]

I have some swelling in that muscle just under the big toe large joint. Any thoughts on what it could be?