Percutaneous Electrical Nerve Stimulation for Carpal Tunnel Syndrome

Experimental: Percutaneous Electrical Nerve Stimulation The experimental group will receive 3 sessions (once per week) of ultrasound-guided Percutaneous Electrical Nerve Stimulation targeted the median nerve. Once the median nerve is ultrasound identified, the needles will be left in situ at the identified points connected to an electrostimulator (ES-160 ITO co.) applying a biphasic continuous waveform, at low frequency (2 Hz)19 and with 250 microseconds pulse duration for 30mins.

The surgical group will receive a surgical procedure consisting of the decompression and release of the median nerve at the carpal tunnel performed by an experienced surgeon according to standardized protocols.