What does the Reverse Phalen Test specifically test for?

The Reverse Phalen Test, also known as the wrist flexion test, is specifically designed to assess for Carpal Tunnel Syndrome (CTS). This test involves placing the wrists in a position of maximal flexion and holding it for a period, typically around 60 seconds. In individuals with CTS, such positioning can aggravate symptoms because it increases pressure on the median nerve as it passes through the carpal tunnel at the wrist.

When performing this test, healthcare providers look for manifestations of symptoms such as tingling, numbness, or pain in the distribution areas of the median nerve, which includes the thumb, index, middle finger, and part of the ring finger. The physiological basis of the test lies in the compression of the median nerve that occurs during wrist flexion, making it a robust indicator of the presence of Carpal Tunnel Syndrome when positive results are observed. This precisely correlates with the nature of the question regarding the symptoms and pathophysiology associated with Carpal Tunnel Syndrome.