Abstract: A gold alloy for use in a dental restoration which does not cause discoloration and greening of dental porcelain after being cast and having a porcelain jacket fired thereon. The gold alloy also produces extremely clean castings. The alloy is 30-50% gold, 30-50% palladium, 5-30% silver, 0.01-5% of at least one element from silicon, boron, germanium and mixtures thereof and 0.01-1.0% of ruthenium. Other elements are included for strength.

Abstract: A sacro-lumbar support belt includes an outer face completely covered by a looped fabric and two elastic tightening panels, each panel rigidly coupled at one end to the outer face and having at its other end a hook means for releasably securing that end to the outer surface at any desired location. Pelvic traction straps with hook means at one end are releasably engageable on the belt outer face at any desired location.

Abstract: A prosthetic joint for the replacement of the ankle joint comprising a tibial member and a talar member each having three distinct complementary bearing surfaces which allow plantar and dorsal flexion and some rotation approximating the movement of the natural ankle joint. The talar member has three adjacent bearing surfaces which are each longitudinally and laterally convexly shaped and the tibial member is provided with three substantially complementary longitudinally and laterally concavely shaped bearing surfaces that provide medial-lateral support while allowing about 5.degree. rotation between the members.

Abstract: A knee immobilizer having a rigid U-shaped shell to fit around the back of the leg extending from well above to well below the knee, the axes of the upper and lower portions being at an angle of 170.degree.. A soft cushion larger and much thicker than the shell lies between the shell and the leg. A rigid front thigh plate and a rigid front shin plate each have soft cushions and are attached to the shell by straps which pass through slots in the shell and plates and are provided with hook and loop fasteners.

Abstract: A device for mixing methyl methacrylate monomer and methyl methacrylate polymer to form bone cement in a hospital operating room includes a bowl-shaped container, a replaceable resilient plastic bowl-shaped liner which fits in the bowl-shaped container, a fluid passageway formed between the liner and container and a deflector cap which covers the space between the upper end of the liner and the upper end of the container. Exhaust openings in the side wall of the liner place the interior of the liner in fluid flow communication with the fluid passageway. The methyl methacrylate monomer and polymer are mixed in the bowl-shaped liner.

Abstract: The embodiment of the invention disclosed herein is directed to a joint prosthesis for total knee replacement. The joint prosthesis includes a first prosthetic member including a stem member adapted for insertion into a first skeleton element. A second prosthetic member includes a stem for insertion into a second skeleton element which is disposed adjacent to first skeleton element. The joint prosthesis is provided with a removable plateau member which forms a slide or rubbing surface for the prosthetic members. The removable plateau can be replaced when worn. Retaining screws are provided on opposite sides of the first prosthetic member to retain the ball within the socket therein.

Abstract: 1. A new crystalline form of D-6-(2-amino-2-phenyl-acetamido)penicillanic acid characterized by being substantially free of water in the chemically bound state, having a molecular weight of about 349, having an infrared spectrograph as disclosed in FIG. 1 of the drawings, and possessing substantially greater storage stability than hydrated crystalline D-6-(2-amino-2-phenyl-acetamido)penicillanic acid.