Abstract
Trigger finger is a common well recognized condition and involves the flexor tendons at the A1 pulley in the palm. Triggering of the extensor tendons is a very rare clinical entity. We report a rare case of extensor triggering of little finger caused by constriction of the extensor digiti minimi by a markedly thickened extensor retinaculum (ER) at the wrist, well delineated dynamically by real-time high-resolution ultrasound. The patient underwent release of thickened ER and was asymptomatic immediately.
Sommario
Il dito a scatto è una condizione frequente, ben riconosciuta, che coinvolge i tendini flessori a livello della puleggia A1. A livello dei tendini estensori è un’entit□ clinica molto rara. Riportiamo un raro caso di dito a scatto dell’estensore del mignolo causato da un marcato ispessimento del retinacolo degli estensori (ER) a livello del polso, ben evidenziato con ecografia dinamicamente ad alta risoluzione. Il paziente è stato sottoposto a intervento con resezione dell’ER ispessito con conseguente, completa, risoluzione della patologia.
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Acknowledgments
We thank Dr. J. Roland Manoj for image assistance.
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Authors declare that they have no conflict of interest.
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The study described in this article does not contain studies with human or animal subjects performed by any of the authors.
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Panwar, J., Thomas, B.P. & Sreekanth, R. Sonographic findings of extensor digiti minimi triggering caused by thickened extensor retinaculum. J Ultrasound 18, 79–82 (2015). https://doi.org/10.1007/s40477-014-0140-3
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DOI: https://doi.org/10.1007/s40477-014-0140-3