Brown, Richard A., MD, Richard H. Gelberman, MD, John G. Seller, MD, Sven-Olof Abrahamson, MD, Andrew J. Weiland, MD, James R. Urbaniak, MD, David A. Schoenfeld, PhD, and Deborah Furcolo, OTR
Journal of Bone and Joint Surgery, Vol. 75-A, No. 9: 1265-1275, September 1993.

"...The diagnosis of carpal tunnel syndrome was made on the basis of pain, numbness, parathesias, or weakness in the distribution of the median nerve at the wrist. The Tinel and Phalen provocative tests were used to assist in diagnosis. Electrophysiological confirmation was established when distal motor-latency values were greater than 4.5 milliseconds or when there was a difference in values between the affected and unaffected hands of one millisecond or more or a sensory latency that was more than 3.5 milliseconds or was 0.5 milliseconds greater than that on the opposite side, or both. Testing was performed with formal electrodiagnostic studies or a NERVEPACE electro-neurometer (Neurotron Medical, Lawrenceville, New Jersey) at each institution except the University of Lund, where only formal electrodiagnostic studies were used..."