Localized chondrocalcinosis of the lateral tibial condyle presenting as a loose body in a young athlete.

Chondrocalcinosis, although very rare in young adults, can occur in some young patients. Although its presenting clinical history or radiographic findings may resemble those of an intraarticular loose body, chondrocalcinosis can occur in young athletes, possibly after repetitive microtrauma, and should be included in the differential diagnosis of calcified intraarticular lesions in the young athlete.