Sonographic Evaluation of Trigger Finger at the Wrist and Carpal Tunnel Syndrome Resulting From a Deep Soft Tissue Leiomyoma

摘要

Trigger finger at the wrist is a unique condition in which finger motion results in triggering at the wrist. Suematsu et al1classified this condition into 3 types: type A is caused by atumor on the flexor tendon or flexor tendon sheath; type Bis from an anomalous muscle belly; and type C is from acombination of a tumor and an anomalous muscle belly.The etiology is typically identified with imaging and confirmed on surgical exploration. We present a case of a deepsoft tissue leiyomyoma triggering at the distal margin of theflexor retinaculum, causing both triggering of the fingers atthe wrist and carpal tunnel syndrome.