Abstract: An intramedullary rod screw guide for use in orthopedic surgical procedures involving the installation of an intramedullary rod comprising means for attaching the guide to an external support assembly during installation of an intramedullary rod, a laterally extending spacer plate, intramedullary rod attachment means proximate the distal end of the spacer plate and guide means secured to the spacer plate intermediate the proximal and distal ends thereof, the guide means forming a passage which, in use, is aligned with the bone screw passage in the intramedullary rod permitting the guided insertion of drill means and bone screw insertion means through the guide passage in alignment with the bone screw passage in the intramedullary rod.

Abstract: A tissue pressure measuring system is disclosed. The system includes a syringe with a cylindrical passage and means for connecting a tissue invasion device in fluid communication with the cylindrical passage. A plug is present within the cylindrical passage and has a diaphragm therein.

Abstract: Tensioning clamps for bone positioning wires of external fixation devices used in orthopedic surgery having clamping structure associated with tensioning guide device for being moved reciprocally therewith for clamping said bone positioning wire for movement with the tensioning guide device, and a clamp and tension indicator including annular washer springs in a cavity between compression surfaces, the distance between which is indicative of the amount of compression, is disclosed.

Abstract: An improved external fixation device is disclosed composed of a pair of arcuate frame segments and multiple adjustment rods and pin holders, which cooperate with one another as well as plural pins extending through the soft tissue and bone of a patient to rigidly immobilize a bone fracture and permit compression, neutralization or distraction of the fracture from a location external to the body.

Abstract: A self-cleaning surgical fixation pin having fluted grooves forming self-cleaning knife edges and twin lead helical threads.

Abstract: A Colles fracture fixature device comprised of a pair of curved, slotted frame members for received fixation pin holders having a pin bushing rotatably received in the bore of the fork arms of a clevis.

Abstract: An improved external fixation device is disclosed composed of a pair of arcuate frame segments and multiple adjustment rods and pin holders, which cooperate with one another as well as plural pins extending through the soft tissue and bone of a patient to rigidly immobilize a bone fracture and permit compression, neutralization or distraction of the fracture from a location external to the body.

Abstract: An improved orthopedic fixation pin holder device is disclosed composed generally of a body member having a pin receiving aperture formed therethrough and a locking member slidingly mounted within the body member including a mating pin receiving aperture formed therethrough. Both apertures are provided with opposingly disposed V-shaped wall portions which apply a concentrated shearing force at discrete locations along the pin diameter to positively clamp the pin within the pin holder.