What is Haglund’s Deformity?

Also known as retrocalcaneal exostosis, Mulholland deformity, or more colloquially as ‘pump bump.’ While a very common clinical condition, physicians still do not understand Haglund’s Deformity completely. Haglund’s deformity involves a bone abnormality that causes an enlargement of the bony area of the heel at the base of the achilles tendon. The large, bony lump can rub against rigid shoes, irritating the soft tissue at the rear of the heel.