What nerve is likely compressed in a positive Reverse Phalen's Test?

In a positive Reverse Phalen's Test, the median nerve is likely compressed. This test is performed by having the patient place their hands in a reverse prayer position, with the palms pressing together and held for about 60 seconds. This position stretches the median nerve as it passes through the carpal tunnel in the wrist. If the test results in symptoms such as tingling, numbness, or pain in the areas innervated by the median nerve, it indicates potential compression or irritation of this nerve.

The median nerve is responsible for sensation and motor function in parts of the hand, particularly the thumb, index, and middle fingers. Conditions such as carpal tunnel syndrome can lead to compression of this nerve, making the Reverse Phalen's Test a useful clinical indicator for diagnosis.

The other nerves mentioned are not typically involved in this test or the conditions it assesses. The ulnar nerve is tested through different maneuvers, while the radial and axillary nerves are associated with different anatomical regions and functions, such as the back of the arm and shoulder, respectively. Therefore, recognizing the specific involvement of the median nerve in the Reverse Phalen's Test is crucial for its successful application in clinical practice.