The Evaluation for Fu's Subcutaneous Needling (FSN) in Carpal Tunnel Syndrome.

The Evaluation for Fu's Subcutaneous Needling in Carpal Tunnel Syndrome: a Randomized Controlled Trial.

The goal of this clinical trial is to evaluate the efficacy of Fu's Subcutaneous Needling (FSN) in carpal tunnel syndrome (CTS). The main questions it aims to answer are:

• Dose FSN improve the symptoms of CTS?
• Dose FSN decrease cross section area of median nerve in CTS patients?
• Dose FSN have the effect of electrophysiology exam in CTS patients? Participants will receive wrist splinting and FSN treatment respectively. Researchers will compare wrist splinting group with FSN group to see if FSN being effective for CTS.

Inclusion Criteria:

1. Male or female aged 20-85 years old.
2. Meet the diagnosis of mild to moderate carpal tunnel syndrome.
3. If the patient has carpal tunnel syndrome in both hands, choose the side with mild or moderate carpal tunnel syndrome.
4. After being explained, join the trial voluntarily and sign the subject's consent form.

Exclusion Criteria:

1. Caused by trauma or mass lesion.
2. Thenar muscle atrophy.
3. Electrophysiological examination revealed severe CTS.
4. Chronic kidney disease, rheumatoid arthritis, abnormal thyroid function, diabetes.
5. Psychiatric history or incapable of cooperating with the investigator.
6. Pregnancy.
7. History of substance abuse or long-term steroid use.
8. History of median nerve surgery.
9. Those who do not sign the consent form.