The instrument consists principally of three parts—an L-shaped arm,C, the two branches of which carry two carriages and two bone clamps. The removable carriages,DandE, are movable in two directions, one laterally and the other away from or toward the operator, as may be required. Mounted on the two carriages are two strong and adjustable bone clamps which are modifications of the well-known Lowman clamp. The illustration shows quite clearly the method employed in bringing the bone ends into apposition. The two bones are grasped by the clamps,AandB, these clamps then being attached to their respective carriages and held fast by means of heavy screws. Numerous anchoring points in the side of the clamps permit the thumb screw of holding the clamps firmly with but little exertion on the part of the operator. By means of a worm gear actuated by hand grips, each
