Anatomy of the varus foot and ankle.

In summary, varus deformity of the foot and ankle encompasses a spectrum of deformities from mild to severe. The cause of this deformity may be bone, muscle imbalance, or a combination of both. Surgical intervention should be planned only after the patient's anatomy is understood. Uncorrected symptomatic varus deformities may have significant consequences on gait kinematics and foot biomechanics.