A device for stabilizing a patients arm during a surgical procedure including a base configured to fit on an operating table, the base having an upper side with a rail. A support arm having a foundation with a groove shaped to match and fit over the cross-sectional shape of the rail and slide along the rail is provided, the support arm has a proximal end and a distal end extending away from said rail. A cuff is mounted on the distal end of the support arm to support the wrist of a patient during the surgery. A standard having a foundation with a groove therein shaped and sized to fit over said rail is also provided. The standard is designed to slide along the rail and move relative to the support arm. Arcuate bicep pads are connected to said support arm and to said standard the arcuate pads being positioned to fit about the bicep of a patient lying on an operating table on which the support device is placed. The support arm and standard are movable relative to each other so that the pads can be moved into engagement about the bicep of a patient. The cuff is substantially U-shaped and is positioned above and remote from the bicep pads.