 2. Some patients are listed for surgery without being seen in the investigators research clinic, but are suitable for inclusion and are therefore missed. The investigators intend to recruit these patients already listed for operations for carpal tunnel syndrome on the day of surgery. The Chief Investigator will approach these patients on the day of their operation to seek their permission to carry out pinch-grip testing before surgery. Patients would receive the Patient Information Sheet from the Chief Investigator, and would be consented for study inclusion and tested within the Ambulatory Care Unit of the hospital whilst waiting for their operation. There would be no alteration to their normal care and certainly no delay to their operation. 