An anatomical variant of flexor digitorum superficialis brevis is an uncommon condition that may be a pitfall in diagnosing carpal tunnel syndrome, involving palpable mass and even characteristic symptoms. We present an unusual case of bilateral symptomatic carpal tunnel syndrome related to the presence of a flexor digitorum superficialis brevis muscle of the little finger, and a critical review of the literature.
Keywords: Anatomical variation; Chirurgie de la main; Compression nerveuse; Flexor digitorum superficialis brevis; Hand surgery; Median nerve; Nerf médian; Nerve compression; Variation anatomique.
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