Abstract: A restraint system for an appendage includes a clamp assembly and an electromagnet capable of being selectively activated for restraint. The clamp assembly includes a base portion and a restraint structure opposing the base portion. The restraint structure defines an opening for receiving an appendage between the base portion and the restraint structure. When the electromagnet is activated for restraint, the clamp assembly restrains an appendage extending in the opening. Another restraint system includes an inflatable bladder arrangement selectively activated to inflate to a first state and to deflate to a second state. When in the first state, the bladder arrangement defines an opening for passing of an appendage there through; however, when in the second state, the bladder arrangement defines an opening that precludes withdrawal of an appendage extending there through.