Hi cts
Here is a link to a JAMA article that you might find interesting: [url="http://people.bu.edu/sobieraj/ed/CTreview.html"]http://people.bu.edu/sobieraj/ed/CTreview.html[/url]
The article is a bit technical. It does say, "It is well documented that many hand surgeons perform carpal tunnel release successfully in patients with normal electrodiagnostic findings" The article has pictures and describes some other test a lot better than I can.