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Updated: Mar 24, 2026

Ultrasound Tissue Characterization of Human Achilles Tendon by Stability Quantification of Echo Patterns
Published on: September 5, 2025
Dynamic ultrasound of peroneal tendon instability
Lionel Pesquer1, Stéphane Guillo2, Nicolas Poussange1
11 Musculoskeletal Imaging Department, Clinique du Sport de Bordeaux, Mérignac, France.
Abstract:
Ankle snapping may be caused by peroneal tendon instability. Anterior instability occurs after traumatic superior peroneal retinaculum injury, whereas peroneal tendon intrasheath subluxation is atraumatic. Whereas subluxation is mainly dynamic, ultrasound allows for the diagnosis and classification of peroneal instability because it allows for real-time exploration. The purpose of this review is to describe the anatomic and physiologic bases for peroneal instability and to heighten the role of dynamic ultrasound in the diagnosis of snapping.
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