calcaneoapophysitis

Inflammation at the posterior part of the os calcis, at the insertion of the Achilles tendon.

* * *

cal·ca·neo·apoph·y·si·tis (kal-ka″ne-o-ə-pof″ə-siґtis) an affection of the posterior part of the calcaneus marked by pain at the point of insertion of the Achilles tendon, with swelling of the soft parts.