Patients received 4 sessions, separated one week between them. The treatment consisted the application of a galvanic current through an acupuncture needle (0,30x30mm). The approach were performed with a transverse axis with a needle in plane, being superficial and deep interface of medium nerve the target tissue. The parameters will be 2 mA (milliamps), 10 seconds, 3 impacts (3: 3: 3).

Patients received surgery for median nerve release.

Percutaneous Needle Electrolysis: the application of galvanic current through an acupuncture needle.

11-question patient-administered survey that rates the severity of the patient's carpal tunnel syndrome-specific symptoms on a scale of 1 (no symptoms) to 5 (worst symptoms)

Describe the symptoms of the hand and wrist (pointing to them in a drawing), and using scales of 1 to 5 (1= No difficulty to do it; 5= I can´t do it), measure the difficulty of performing certain activities (writing, buttoning, holding a book ...)

Number of visits to the specialist, number of hospitalization days, number of physiotherapy sessions, prescribed medication, days of work absenteeism