Methods
Forty-seven patients with mild-to-moderate CTS were enrolled in a
prospective, randomized, single-blinded, controlled trial (6 months
follow-up). With ultrasound guidance,
patients in both groups
(short-axis or long-axis groups) were injected with normal saline (5 mL
per session). Assessments were performed before and 2 weeks after the
injection, as well as at 1, 3, and 6 months post-intervention. The
primary outcome measure was the Boston Carpal Tunnel Syndrome
Questionnaire (BCTQ) score and secondary outcomes included the
cross-sectional area of the median nerve and electrophysiological
studies.