Image Interpretation: The Achilles tendon is thickened and hypoechoic, with marked hyperemia, most notable along the mid-tendinous portion. The retrocalcaneal bursa is distended, without hyperemia, but sonopalpatory pain is appreciated here. At the distal Achilles insertion, several small, hyperechoic foci are noted with posterior acoustic shadowing, consistent with calcifications and bony changes. The constellation of these clinical and sonographic findings suggests both midportion and insertional achilles tendinosis with associated retrocalcaneal bursitis and evidence of a Haglund deformity.
Teaching Pearl: A Haglund’s deformity, or "pump bump", is a common cause of heel pain. It is commonly found in individuals wearing rigid shoes and high heels. Constant pressure around the calcaneus near the insertion of the Achilles tendon leads to formation and growth of a bony prominence, typically referred to as a Haglund deformity. Furthermore, constant friction at this area leads to irritation of the retrocalcaneal bursa, thickening of the Achilles tendon, and swelling of the surrounding soft tissues.The combination of insertional achilles tendinosis with retrocalcaneal bursitis part of Haglund's deformity is consistent with the clinical diagnosis known as Haglund’s syndrome. Ultrasound is a useful modality which helps visualize Achilles tendinopathy, accompanying retrocalcaneal bursal thickening and/or changes to the underlying fat pad. Since improper shoes are a major cause, one of the first line steps in treatment is to encourage the use of better footwear with open backs or cushioned heels. Heel pads and orthotics can also be used as supplements to further reduce any irritation on the calcaneus and Achilles tendon. Management of the inflammation and pain can be resolved with ice and NSAIDS. Physical therapy is another modality to improve flexibility and strength of this region. In severe cases, surgery is considered to resect any affected soft tissues and possible bony overgrowth.