Efficacy of median nerve hydrodissection by hyalase versus midazolam in the treatment of carpal tunnel syndrome.

The objective was to determine which of midazolam or hyalase could improve the pain score and functional disability in median nerve hydrodissection. In a double-blind study with two groups, both received bupivacaine 15 mg with either 300 IU hyalase in 2 ml of saline (group HA) or 2 mg of midazolam in 2 ml of sterile saline (group MZ). Statistically significantly lower post-injection Visual Analog Scale scores in group MZ compared with group HA at all follow-ups.