Clinical experience of the percutaneous release for trigger fingers

Background: Conservative management for the trigger fingers includes splinting, steroid injection and other adjuvant methods. If conservative treatment fails, a surgical release of the A1 pulley is offered. Although the success rate of the surgical intervention is high, the complications, for example, a digital nerve injury, bowstringing, infection and continued triggering, have been reported. Percutaneous release with an 18 guage needle has been reported as a safe and effective procedure for the trigger fingers. This study evaluates the safety and efficacy of the percutaneous release.

Methods: 33 patients received the percutaneous release of the A1 pulley with an 18 guage needle and steroid injection (Group A) and 36 patients did the only administration of steroid as a control group (Group B). Patients were examined with a clinical staging for the Watanabe stage (W stage) and 0-10 points verbal numerical rating scale (VNRS) score at 1 week, 3 months, 1 year after the initial treatment.

Results: After 1 year of the follow-up, 93.5% in the group A and 57.6% in the group B had complete release of the trigger fingers in the W stage. VNRS after the initial treatment demonstrated that the decrement of the pain score was more significant in the group A.

Conclusions: We need to consider the percutaneous release with steroid injection at an early stage of the trigger fingers because of the more effective resolution of the symptoms and the better long-term prognosis than a steroid injection alone.