Haglund’s deformity is a bony enlargement on the back of the heel, near where the Achilles tendon inserts. When this prominence becomes irritated - often by stiff or tight footwear - it can lead to inflammation of the surrounding soft tissues, including a fluid-filled sac called a bursa, resulting in pain and swelling.
Irritation is commonly caused by shoes with firm heel counters, such as pumps, skates, or men’s dress shoes. Certain foot types - particularly high arches, tight Achilles tendons, or a tendency to walk on the outer edge of the heel—can increase susceptibility. Genetics may also play a role in predisposing someone to this condition.
Patients often notice a visible bump at the back of the heel, along with redness, swelling, and pain - especially where the Achilles tendon inserts. Diagnosis is usually straightforward through visual and physical examination. Your foot and ankle specialist may order X-rays to assess the size and shape of the bony prominence and to rule out other conditions.
