You suspect your patient has carpel tunnel syndrome and want to perform the Phalen maneuver. Which of the following patient instructions is correct?
a. Hold your palm out and tap your wrist.
b. Flex both wrists and press your palms together for one minute.
c. Place the hand palm up with your thumb perpendicular to it.
d. Palmar flex both wrists and press the dorsal surfaces together for one minute.