Predisposing factors that increase trigger digit incidence in carpal tunnel syndrome patients: A national, population-based study

Carpal tunnel syndrome (CTS) and trigger digits (TD) are often coexist, and they share many risk factors including diabetes mellitus, rheumatoid arthritis, and osteoarthritis 1.In addition, carpal tunnel release (CTR) can also be associated with TD. Specifically, CTR increases the entrance angle of the flexor tendons to the A1 pulleys 2. This angle increase may cause additional friction between flexor tendons and the A1 pulley, which results in TD 3. When considering treatment for CTS, patients often ask about typical postoperative course and complications.