Haglund’s deformity is often called “pump bump” because the rigid backs of pump-style shoes can create pressure that aggravates the enlargement when walking. In fact, any shoes with a rigid back, such as ice skates, men’s dress shoes, or women’s pumps, can cause this irritation.
A high-arched foot
A tight Achilles tendon
A tendency to walk on the outside of the heel.
To some extent, heredity plays a role in Haglund’s deformity. Inherited foot structures that can make one prone to developing this condition include: