Posterior ankle impingement

Case contributed by Dr Mohammad A. ElBeialy


Posterior ankle pain.

Patient Data

Age: 17 years
Gender: Male

Elongated posterolateral talar (stieda) process. No fracture, no other bony or articular abnormality. 


Elongated lateral tubercle of the talus (Stieda process) as well as mild posterior lateral capsular thickening and synovitis with mild focal tenosynovitis involving the flexor hallucis longus. 

The posterior talofibular ligament also appears mildly thickened with intermediate T1 and T2 signal intensity.  

Focal marrow edema signal of the medial talar dome is seen with hypointense T1 and hyperintense T2 and STIR signal with likely small osteochondral lesion.

Intact collateral ligaments and tendo-achilles. No joint effusion. 

Case Discussion

Posterior ankle impingement with elongated posterolateral talar Stieda process.  

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Case information

rID: 38578
Published: 17th Sep 2015
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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