A Haglund’s deformity of the foot occurs when the heel bone becomes enlarged. This enlargement irritates the Achilles tendon when shoes are worn and causes pain and inflammation. The pain is from joint inflammation and swelling at the back of the heel. Cause Shoes that have a rigid back may create a callus that forms at the back of the heel. Wearing the shoes then forces the body to try to protect itself and it starts forming the bony enlargement. The condition is more prevalent in those who have Achilles tendon problems or a high-arched foot. Overly supinating the foot – walking on the outside of the heel – can also cause a Haglund’s deformity. Treatment and Prevention Custom orthotic arch supports, inserts and proper heel support are important for those who have a Haglund’s deformity. Heel pads reduce the stress felt on the heel and elevate the area above the point of irritation. Softer backed shoes can stop irritation on the area. Stretching exercises relieve the tension from the Achilles tendon. Ice reduces pain and inflammation, as does ultrasound and cold laser. Pain medication may be prescribed. None of these will remove the actual deformity; they will only lessen the pain of it. The same measures – orthotic supports, softer shoes, and stretching – are used in prevention.