A technique for accurately marking the A1 pulley on the skin

摘要

Percutaneous release of the A1 pulley can be used in the treatment of triggering digits, and has advantages over other treatments, such as steroid injection, splin-tage, and open release. Accurate identification of the A1 pulley can make percutaneous release safer and more reliable (Fiorini et al 2011; Wilhelmi et al., 2001). According to Wilhelmi et al. (2001), fhe distance from the palmar digital crease (PDC) to the proximal interphalangeal (PIP) crease is approximately equal to the distance from the PDC to the proximal edge of the A1 pulley. The length of A1 pulley was reported to be approximately 0.98 (SD 0.02) cm for the small finger and 1.17 [SD 0.02) cm for the index, middle, and ring fingers (Wilhelmi et al., 2001).