Displaced os trigonum

Case contributed by Dr Varun Babu



Patient Data

Age: 45 years
Gender: Female

Failure of fusion of lateral tubercle of posterior process of talus which is seen displaced superiorly. 

Case Discussion

One in three people has this anatomic variant where the lateral tubercle is not fused. The flexor hallucis longus tendon runs medial to it. In cases of displacement, it can be a cause of flexor hallucis longus tenosynovitis. 

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Case information

rID: 74790
Published: 5th Mar 2020
Last edited: 13th Mar 2020
Inclusion in quiz mode: Included
Institution: Exir Medical Subspecialties Centre

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