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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.