Severe wear on the outside of the heel is mainly due to incorrect walking and standing postures or foot deformities, which cause excessive stress on the outside of the heel and cause excessive heel wear. Walking and standing postures are common in pigeon-toed people. The patient's feet are drawn inward, resulting in excessive weight-bearing on the outer and rear parts, resulting in excessive wear of shoes. Deformities of the feet can be seen in varus and flat feet. Due to the deformity of the foot, the weight of the foot is unbalanced, and the outer back of the foot bears too much weight, resulting in excessive wear of the shoes.