Posterior talus osteochondroma a rare location, treated by posterior ankle arthroscopy

• Posterior talus osteochondroma is a rare lesion.
• Proper imaging can define the lesion in a better way.
• Posterior ankle arthroscopy provides complete access.
• Total excision can be achieved through minimal access.

The common cause of posterior ankle impingement syndrome is impingement of the Os trigonum or the posterior talar process. We report a case of a 46-year-old lady having osteochondroma of the posterior talar process, a rare occurrence at this site. This patient was treated with posterior ankle arthroscopic excision through the 2-portal posterior ankle arthroscopy technique in the prone position. 6 months post-operatively, her ankle pain disappeared and ankle range of movement improved significantly and there is no recurrence of the tumour.