Carpal Tunnel Syndrome Research Today is a free monthly online journal that collates and summarizes the latest research about Carpal Tunnel Syndrome, including details on symptoms, causes, trauma, diagnosis, physiotherapy.

"Trigger finger at the wrist" due to anomalous flexor digitorum superficialis muscle belly within the carpal tunnel.

Bou-Merhi JS, Harris PG, Brutus JP

Division of Plastic Surgery, Department of Surgery, hôpital Notre-Dame, centre hospitalier de l’université de Montréal (CHUM), 1560, rue Sherbrooke Est, Montréal (Québec), Canada.

"Triggering of the fingers at the wrist" is a relatively unusual condition. It consists in a triggering at the wrist produced by finger motion. Its etiology and presentation may vary. This condition should be clearly differentiated from the other clinical entity called "trigger wrist", occurring on wrist movement. In the present article, we report the case of an anomalous flexor digitorum superficialis muscle belly, arising from the right ring finger at the carpal tunnel, in a 47-year old female patient, causing triggering of the right ring finger at the wrist and a carpal tunnel syndrome. Surgical excision of the muscle mass and carpal tunnel release relieved patient's symptoms and has led to the disappearance of the triggering phenomenon. To date, few cases of trigger finger at the wrist have been reported in the literature. These reported cases were reviewed. The clinical entity of "true trigger wrist" and its etiology are also discussed.

Published 8 October 2007 in Chir Main.
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