Fig. 8.12. Posterior ankle impingement (os trigonum syndrome).

Fig. 8.12

Posterior ankle impingement (os trigonum syndrome). Sagittal fat-suppressed intermediate weighted MR image of the ankle (a) demonstrates os trigonum with bone marrow edema separated from the talus by interposed fluid (black arrow), bone marrow edema in the posterior talus (white star), and retroachillear soft tissue edema (black star) in a soccer player with clinical symptoms of posterior impingement. Corresponding fat-suppressed T1-weighted image after contrast administration (b) shows localized synovitis in the posterior joint recess (white arrowhead)

From: Chapter 8, Ankle and Foot

Cover of Musculoskeletal Diseases 2021-2024
Musculoskeletal Diseases 2021-2024: Diagnostic Imaging [Internet].
Hodler J, Kubik-Huch RA, von Schulthess GK, editors.
Cham (CH): Springer; 2021.
Copyright 2021, The Author(s)

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