Flexion and Extension
The Flexion test is performed to define strength in the wrist area. By aligning the ring finger on the activator ring and bracing the forearm on the fulcrum support, the patient and/or employee will twist or bend the wrist into the body for the right hand and away from the body for the left hand. This test gives an accurate measurement for the Flexion movement of the wrist only.
The Extension test is performed to define the symmetrical difference between hands in wrist extension strength, the maximum amount of strength, and the relation to grip strength. This series also defines the difference between its counterpart, Flexion. Hyper Wrist Extension is typically the main culprit of carpal tunnel syndrome. The Extension test is the exact opposite of Flexion of the wrist only. The test is performed by aligning the ring finger with the activator ring and bracing the forearm against the fulcrum brace. Once this is done the patient and/or employee will twist or bend the activator away from the body for the right hand and into the body for the left hand.