Table 1 Inclusion/exclusion criteria

Age rang 18 – 70 years

Prior surgery at the wrist

Both genders

Allergic to prilocain

Hand or wrist pain with paresthesias or numbness in the first three or all fingers

Deformity of the wrist bone

Symptoms presents for at least three months

Pregnancy

No prior surgery at the wrist

Coagulopathy

Willing and able to provide informed consent ability to take part on the study

Median nerve distal motor latency > 4,5 ms