What does this article add?
However, due to inconsistent results from published studies,
controversy continues about the optimal strategy between short- and
long-axis injection for carpal tunnel syndrome.
This prospective study was the first randomized, single-blind,
comparative trial to show that both short- and long-axis
hydrodissection were effective for patients with mild-to-moderate
carpal tunnel syndrome; however, the short-axis hydrodissection
conferred relatively better efficacy 1 month after the injection.