Abstract: An orthopedic screw and plate system in which the screw has a single male thread profile disposed on its shaft. The thread profile is uniform and unitary. The plate provides plate holes. A female thread profile is disposed on the interior of the plate holes, and extends through the thickness of the plate. The female thread profile is configured for matching threaded engagement with the male thread profile on the shaft of the screw, such that when the screw is threadably received through the plate hole and into a bone, threaded engagement between the screw and the plate locks the plate in a desired position relative to the bone. Methods of fixation are also described using the disclosed screw and plate system.

Abstract: A cutting and forming device includes an outer sleeve, an inner sleeve, and a housing. The outer sleeve has a longitudinal axis, a front end, a rear end, and a borehole having an borehole axis. The inner sleeve, can be rotated in the outer sleeve's borehole and includes a front end, a rear end, and a borehole having a borehole axis. The housing with a central axis has a front end, a rear end, and a cavity which accommodates the outer sleeve and passes through the housing parallel to the central axis. The front end of the inner sleeve has a circular cutting edge which is concentric with the borehole axis of the inner sleeve, and the borehole at the front end of the outer sleeve has a constriction whose longitudinal axis is parallel to the borehole axis of the outer sleeve.

Abstract: A screw with an integrated screwdriver, the screw having a screw shaft with a thread, a screw head, and a longitudinal axis, and the screwdriver being connected coaxially with the longitudinal axis over a specified breaking point with the screw head, characterized in that the screw head has an external thread.

Abstract: A cutting and forming device comprising an outer sleeve, an inner sleeve, and a housing. The outer sleeve includes a second longitudinal axis, a first front end, a first rear end, and a first borehole having an first borehole axis passing longitudinally through the outer sleeve. The inner sleeve, capable of being rotated in the first borehole coaxially to the first axis of the first borehole, includes a second front end, a second rear end, and a second borehole having a second borehole axis passing through the inner sleeve longitudinally. The housing with a central axis has a front end, a rear end, and a cavity which accommodates the outer sleeve and passes through the housing parallel to the central axis.

Abstract: A screw with an integrated screwdriver, the screw having a screw shaft with a thread, a screw head, and a longitudinal axis, and the screwdriver being connected coaxially with the longitudinal axis over a specified breaking point with the screw head, characterized in that the screw head has an external thread.