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

standard wrist splinting at night for 2 weeks

FSN is a single-use disposable needle(Trocar Acupuncture Needle, Nanjing FSN Medical Co. , Ltd, China.). The needle body is solid, and covered with a plastic tube. The needle penetrates the skin with insertion device. Under the guidance of ultrasound, the needle enter the loose subcutaneous layer obliquely without penetrating into the muscle. This is the difference from traditional acupuncture. The insertion point is midpoint of the anterior forearm. The needle tip is toward the carpal tunnel. After the needle is inserted, SM and RA are performed. The frequency of SM is 200 times in two minutes. The method of SM is to make a horizontal fan swaying with the base of the needle as the fulcrum. RA is performed while SM-slowly make a fist for 10 seconds and then relax for 5 seconds. Eight times of RA in two minutes. After the FNS treatment, the needle was withdrawn.