Distal tibiofibular synostosis

Case contributed by Dr Roberto Schubert

Presentation

Known deformity and worsening pain of the right ankle. No history of trauma or operation.

Patient Data

Age: 40
Gender: Female
Modality: MRI

Bony fusion of the distal tibia and fibula over more than 6 cm. Secondary osteoarthritis with subchondral cysts and marrow oedema. Sessile osteochondroma at the dorsal border of the fibula.

Case Discussion

Non-traumatic distal tibiofibular synostosis seems to be a very rare condition. Only 2 cases have been described as "congenital" 1, though they should rather be called developmental. Coalescence of "kissing osteochondromata" has been described as a possible pathogenetic mechanism 2.

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Case Information

rID: 17666
Case created: 3rd May 2012
Last edited: 14th Mar 2016
Inclusion in quiz mode: Included

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