Surgical appliance post clamp for surgical tables

A clamp for securing a surgical appliance post to a rail mounted on the side of a surgical table which clamp may be placed over and on the rail at any desired location by providing the clamp body with a passageway transverse the body of the clamp and parallel to the rail, the passageway having a lip on one edge of a width about the dimension of the rail for engaging the backside of the rail, and the passageway having a width greater than the rail on the opposite edge. A clamping device such as a screw or cam is mounted on the outermost portion of the clamp and is arranged to engage and secure the post as well as bind the clamp body to the rail. Additionally, the clamping arrangement of one of the preferred embodiments provides a means by which an appliance post may be gripped at any chosen angle rather than limited to a fixed orientation.