Triggering Thumb Is Not Always a Trigger Thumb.

Although rare, the thumb can trigger because of de Quervain disease. An 18-year-old woman presented with painful triggering during thumb movements. Physical examination revealed locking upon thumb extension and painful snapping upon thumb flexion, with tenderness over the first extensor compartment. During the ultrasonography examination, the extensor pollicis brevis tendon snapped with a jerky movement. According to intraoperative active movement under wide-awake local anesthesia no tourniquet, only the extensor pollicis brevis tendon subcompartment was released, and the snapping was resolved. The patient was symptom-free at the second postoperative week control. Triggering because of de Quervain tenosynovitis is a rare condition, and surgical release is required in most cases. Dynamic ultrasonography is an effective tool for precise preoperative assessment of pathology and assists surgical planning. Surgery under wide-awake local anesthesia no tourniquet is advised, which helps intraoperative assessment of pathology and ensures accurate treatment.