COMMERCE TOWNSHIP, Mich. – DMC Huron Valley-Sinai Hospital is offering a less invasive treatment for carpal tunnel syndrome. Carpal tunnel syndrome involves pain, numbness, tingling and weakness in the hand. It’s caused by pressure on the median nerve in the wrist and is brought on by swelling of the transverse carpal ligament. DMC Huron Valley-Sinai HospitalDMC said the new treatment requires only a very small incision and uses ultrasound to find a pathway to the transverse ligament through the carpal tunnel. Carpal tunnel syndrome can be debilitating if left untreated.