An arm restraint system is provided for restraining movement of an arm of a patient's body lying over a top surface of a table. The system includes a rigid support frame located at a lateral edge of said table and a padded restraint configured to at least partially receive the arm of said patient. The padded restraint is securely fixed to the rigid support frame, via a repositionable fastener, to inhibit movement of the patient's arm relative to the rigid support frame and thereby maintain the arm at a position laterally adjacent to the patient's body without the arm being restrained by tucking.