2009 Achilles Tendonitis and Rupture PatientPlus

Description: Achilles tendonitis This is inflammation of the tendon, usually resulting from overuse associated with a change in playing surface, footwear or intensity of an activity.
Updated 2011 The Achilles tendon is surrounded by a connective tissue sheath (paratenon or paratendon), rather than a true synovial sheath. The paratenon stretches with movement, allowing maximum gliding action. Near the insertion of the tendon are 2 bursae, the subcutaneous calcaneal and the retrocalcaneal bursae.