Abstract: An apparatus for supporting an arm during medical procedures such as radial catheterization and carpal tunnel procedures is disclosed. The apparatus includes an arm support section configured to support an arm of a patient, an intermediary valley section connected to a second end of the arm support section, a wrist flexing section connected to a second end of the intermediary valley section and configured to promote a downward flexing of the wrist, and a hand-hold section connected to the wrist flexing section. The hand-hold section is configured to hold the wrist in the downward flexing position.