Haglunds Deformity is an enlargement of the calcaneus leading to a bump on the back of the heel. It occurs more commonly in women and is also known as ‘pump bump’ because of its association with certain shoes.
It may not necessarily be painful, although it is unsightly and can be red and swollen. But it can also become inflamed. The bursa can become swollen and painful to the touch, making wearing shoes uncomfortable, and restricting sport.
New shoes will often cause blistering on the back of the heel. It is an osteophytic enlargement of the Calcaneus due to repeated trauma to that bone. It lies under the Achilles tendon and a little off centre to the outside.
What causes Haglunds Deformity?
Haglunds Deformity is more common in those who have bandy legs or a severe rear foot varus. These types of alignments make the foot strike the ground supinated (outside), which then rolls into pronation.
The heel rocks back and forth with each stride. The repeated friction of the Achilles over the heel bone and the irritation of the heel against the inside of the heel cup of the shoe lead to the irritation that creates the gradual enlargement of the calcaneus.
This may be painful as the Bursae that exists naturally between the Achilles and the Calcaneus becomes inflamed.
How to treat Haglunds Deformity
Retro-Calcaneal Bursitis is painful and sufferers are forced to wear sling-back shoes to reduce further irritation against the back of the heel.
Once the heel bump has formed, there is little you can do except surgical de-bulking. This is a relatively uncomplicated procedure involving reducing the size of the Calcaneus.
An orthopaedic surgeon can assist you with this. After this corrective surgery, a podiatrist can deal with the biomechanics to prevent recurrence of the condition.
A biomechanical assessment will diagnose the type of feet and function you have.
Correction assists with reducing excessive heel rocking from heel strike to heel lift off. Insoles or orthotics may assist. Stretching, mobilisation and the correct footwear also help.