Carpal tunnel syndrome is a condition in which the median nerve is compressed at the wrist, leading to paresthesias, numbness and muscle weakness in the hand. Treatment of the condition often involves surgery.

In this study we wish to se if there is an effect of using intramuscular stimulation (IMS) to release the tension of nervus medianus in the lower arm. The study will be performed by randomization to IMS of musculus pronator teres or a control ("Scam IMS treatment" to the acupuncture point Li11). The two insertion points are approximately 1cm apart in the lower arm.

The most important outcome measure is ultra sound measured diameters for nervus medianus in the carpal tunnel

Inclusion Criteria:

• Canalis Carpi Syndrome verified by ultrasound and clinically
• Both genders
• Age from 18 to 67

Exclusion Criteria:

• Negative neurophysiology result.
• Epilepsy,
• Heart disease,
• Rheumatism
• Unstable angina pectoris,
• Metal -allergy,
• Needle- phobia,
• Infection
• Hemophilia
• Cognitive problems