Ossification of the Achilles tendon is a rare condition. We recently t
reated a patient with ossification of bilateral Achilles tendons. The
patient was a 50 year old male whose chief complaint was discomfort ar
ound the Achilles tendon. He had a previous history of treatment of bi
lateral club feet. On the roentgenograms, the length of the bony mass
in the Achilles tendon was 5.5 cm on the right side and 1.5 cm on the
left side. The left side was treated by surgical removal of a bony mas
s and suture of the tendon. Microscopic examination of the extirpated
specimen revealed bone formation through enchondral and intramembranou
s ossification in the Achilles tendon.