Achilles insertional calcific tendinosis
Long standing posterior ankle pain with recent aggravation and localized tenderness.
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Thickened achilles tendon at it's insertion with intrasubstance PD hyperintense signals within the medial aspect.
Two small intratendinous calcific foci - enthesophytes due to chronic repetitive stress identified in the altered signal fibres of the tendoachilles.
Repetitive microtrauma results in hemorrhage, intratendinous collagen degeneration and fibrosis , eventually culminating in calcific foci within the injured segment as a compensatory mechanism to counter the excess stress encountered.
- Schweitzer, Mark E., and David Karasick. "MR imaging of disorders of the Achilles tendon." American Journal of Roentgenology 175.3 (2000): 613-625. Pubmed citation