A small, fluid-filled cushion at the back of your heel — the retrocalcaneal bursa — can become irritated and swollen, causing deep pain right where the Achilles tendon attaches to the heel bone. It's common in runners and dancers, but it's very treatable.
The retrocalcaneal bursa cushions the Achilles tendon against the heel bone — in this condition, it becomes irritated and swollen.
Overuse, footwear, and foot structure are the usual drivers
Haglund's deformity — an excessively prominent heel bone — reduces the space available for the bursa and is a common underlying cause.
Recognizing the pattern — and when it needs urgent attention
⚠️ Seek urgent care if: you notice redness, increasing warmth, fever, or generally feel unwell — these point to infection, not simple bursitis.
From simple home care to specialist treatment
Calf stretching and strengthening form the backbone of recovery
Gentle calf stretching, progressing to guided strengthening under a physiotherapist's supervision, gradually reduces the compression on the bursa and builds the heel's tolerance to load.
Guided exercises to support recovery
The mistake I see most often with this condition
"Patients often assume heel pain at the back is the same as plantar fasciitis under the foot, and treat it the same way — that's the most common mistake I see. Retrocalcaneal bursitis responds to a very different approach: calf flexibility and footwear changes matter far more here than foot-sole stretches. Get the shoe and the calf right early, and most patients avoid injections or surgery altogether."
— Dr. Sumit Dubewar · DABRM (USA) · Secunderabad
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