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  • Title: Nerve ultrasound in electrophysiologically verified tarsal tunnel syndrome.
    Author: Samarawickrama D, Therimadasamy AK, Chan YC, Vijayan J, Wilder-Smith EP.
    Journal: Muscle Nerve; 2016 Jun; 53(6):906-12. PubMed ID: 26562220.
    Abstract:
    INTRODUCTION: Tarsal tunnel syndrome (TTS) arises from tibial nerve damage under the flexor retinaculum of the fibro-osseus tunnel at the medial malleolus. It is notoriously difficult to diagnose, as many other foot pathologies result in a similar clinical picture. We examined the additional value of nerve ultrasound in patients with tarsal tunnel syndrome confirmed by nerve conduction. METHODS: We performed a retrospective analysis of nerve ultrasound changes in electrophysiologically confirmed TTS spanning our records from 2007 to 2015. RESULTS: Nine feet with TTS were identified, all of which showed abnormal nerve ultrasound findings, which in 6 feet, led to identification of the underlying cause. CONCLUSIONS: This study shows that nerve ultrasound is abnormal in all cases of electrophysiologically verified TTS. The pattern of nerve abnormality is varied. This, and the fact that in the majority of patients causation was identified, suggests nerve ultrasound should form part of standard work-up for TTS. Muscle Nerve 53: 906-912, 2016.
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