Abstract: A system and method of angularly stable fixation of an implant on a bone includes the steps of making at least one hole in the bone by means of a bone drill. An implant is placed on the bone in a desired position and joining the implant with the bone, such that the implant is prevented from rotation about its attachment point. A system is provided for use in the above described method. The system comprises a bone drill, an implant and a sonotrode for angularly stable fixation of the implant on the bone. The system can further comprise a joining element to join the implant with the bone.

Abstract: An intramedullary locking nail for treating bone fractures and which have spaced apart regions has at least one transverse hole for receiving a bone screw and at least one transverse hole being configured as an elongate hole extending in the longitudinal axial direction of the nail. An end portion of the elongate hole being wider than an adjacent portion of the elongate hole. The adjacent portion of the elongate hole having a constant width over its length. A bone screw is provided having a cross-sectional contour having a flattened segment. The end portion of the elongate hole being formed such that the bone screw is locked in a first rotational position in the end portion, and in a second rotational position, may enter the adjacent portion unhindered from the end portion.

Abstract: An apparatus for bracing a plurality of vertebrae of the human spine has at least two pedicle screws, each having an annular head with an opening therewithin and including a slot therewithin. Each slot extends into the corresponding opening and includes internal threaded portions. A securing screw to be screwed in each slot is provided. A relatively stiff threaded rod is also provided and is to be inserted into the opening in the head of each of the pedicle screws and to be secured by the securing screws. Adjusting nuts are screwed on the rod and at least one cooperates with each head.

Abstract: An implant for osteosynthesis, for example a bone nail, has an implant body which has at least one bore with a threaded portion and a bone screw which engages the thread when it is threaded into a bone for the fixation of the implant body. The threaded bore has an annular groove the diameter of which is larger than the thread outer diameter, and which receives a ring of a deformable material with an inner diameter which is smaller than the outer diameter of the thread of the bone screw so that the ring extends partially into the bore.

Abstract: An interlocking nail, particularly for fractures of the proximal femur having a proximal portion that has provided therein a bore preferably extending obliquely to the axis of the proximal portion for receiving a screw or pin, particularly a femoral neck pin. The bore is formed so that the lateral edge portions located on opposed sides are flattened and rounded at the inlet end or also the outlet end of the bore.

Abstract: A stereotaxic apparatus for a locking nail which has two oscillating circuits which are disposed along the longitudinal direction of the locking nail. The apparatus has a guide sleeve to place a drill and/or bone screw which, when the stereotaxic apparatus is in an oriented condition, points to a cross-bore in the locking nail. The guide sleeve has three or more oscillating circuits arranged in a first plane that are equidistant each from a first center located in the plane; three or more oscillating circuits are arranged in a second plane extending in parallel with said first plane that are equidistant each from a second center located in said second plane. The first and second planes are arranged towards each other such that a face normal to one of said planes extends through the first and second centers.

Abstract: An implantation device for fixating a bone has a main body. The main body has a peripheral region and comprises a polymeric material. The peripheral region comprises the polymeric material and a plasticizer. In particular, the peripheral region may be adapted to be fixed to a bone. A method for producing the implantation device includes the steps of forming an implantation device using polymer material, and dipping at least a portion of the implantation device into a plasticizer in such a way that a peripheral region of the implantation device is plasticized.

Abstract: The invention relates to a kit comprising the following individual components: (a) polymers comprising at least one free amino group, (b) bridge molecules selected from the group consisting of monocyclic ortho-dihydroxyaromates, mono-cyclic para-dihydroxyaromates, bicyclic monohydrxyaromates, polycyclic monohydroxyaromates, bicyclic dihydroxyaromates, polycyclic dihydroxyaromates, bicyclic trihydroxyaromates, polycyclic trihydroxyaromates, and mixtures thereof, and (c) polyphenoloxidases, in particular, lignolytic polyphenoloxidases, whereby the individual components b) and c) are not in contact.

Abstract: A bone nail, particularly a proximal femoral nail, has a nail shank having at least one cross-bore near one end and an axial bore having a threaded portion. A screw, for example, a femoral neck screw is provided having a threaded portion and a smooth shank portion between the threaded portion and a screw head, which can be introduced into the cross-bore. An interlocking pin or screw is placed in the axial bore. The locking pin has a male threaded portion interacting with the female threaded portion of the bore. The locking pin or screw has an end portion which engages the smooth shank of the screw to locate it axially and wherein at least the end portion of the locking pin is made of an elastically and/or plastically deformable material.

Abstract: A screw driver for a screw having a drive socket having an axially extending shaft with a bifurcated tip, the tip having a cross-sectional profile for insertion into a cross-sectional profile of the screw socket. The shaft has a tapered section adjacent the bifurcated tip. A bushing is mounted on an outer surface of the shaft for axial movement therealong. The bushing has inwardly extending protrusions for engaging the tapered section on the shaft upon movement in the axial direction along the shaft in a direction. away from the tip. This allows the selective capture or release of the screw by the shaft tip by axial movement of the bushing away from and towards the shaft distal tip.

Abstract: A Kirschner wire clamp is used to reliably and simply fix bone plates to a bone surface. The wire clamp consists of a tubular guide member for receiving a Kirschner wire. The guide member has a bore surrounded by a wall and a base for engaging a hole in a bone plate such as a bone screw hole. A spring clamp is mounted adjacent an open end of the tubular guide bore opposite the base which clamps the Kirschner wire to the guide member after the wire has been fixed in bone. The Kirschner wire clamp can be aligned simply and reliably by the guide member, and by the clamping mechanism, can be reliably fixed to the Kirschner wire.

Abstract: An osteosynthetic aid for tubular bones includes a locking nail which has a shank and, at the two ends of said shank, has at least one cross-bore for a headed locking screw. A biasing sleeve is resiliently deformable in an axial direction and is disposed between the head of the locking screw and the shank of the locking nail. The sleeve maintains the cross-locking screw under tension to keep the shank of the nail from shifting during use.

Abstract: A targeting system has a targeting device for a locking nail which is proximally provided with cross-bores the axes of which are disposed in an offset relationship from each other by predetermined distances and/or by predetermined angles. The apparatus has a target arm having at least one target bore and a holding device mounted on the target arm to engage the distal end of the nail. The holding device has a reception bore in which a retaining or locating bar is guided. The locating bar extends in parallel with the target arm and generally perpendicular to the cross-bore. The locating bar has fasteners to fix it to the nail. The retaining bar has several recesses in the area of the reception bore. The reception bore has associated therewith a radially movable locking element or detent element which can be moved into engagement with one of the recesses by use of a handle to locate the axial and rotational positions of the retaining bar in the reception bore.

Abstract: An osteonsynthesis implant has a plate-shaped base component having at least one hole, at least one axially extending rod-shaped tie rod having a first and a second end and at least one threaded component. The first end of the rod-shaped tie rod can be placed in the hole of the base component. The hole and the first end of the tie rod are formed such that the first end of the tie rod can be locked axially in the hole and is pivoted about an axis of the hole while locked to the plate. The second end of the tie rod is provided with a thread and the threaded component can be screwed onto the thread of the first tie rod. The tie rod can perform a pivoting movement of up to about 20 ° around the hole axis while locked in the plate hole.

Abstract: A bone plate mounted on a bone. The bone plate has at least one opening for receiving a flush mounted cam. A through-bore passes from a side surface to opposing side surface of the bone plate. The through-bore has a diameter sized to allow insertion of a cable. A portion of the through-bore intersects with a peripheral portion of the opening. A second opening also passes from the side surface to opposing side surface. A cable may be inserted in the second opening, wrapped around the bone and its free end inserted in the through-bore. The cable may be tightened around the bone. The flush mounted cam can be rotated in place. Rotation of the cam results in the cam surface squeezing the cable between concave cam surface and walls of the opening, thereby locking the cable in the tightened state.

Abstract: An intramedullary nail and targeting and/or nailing instrument are provided, whereby a connection end of the targeting and/or nailing instrument has an axially parallel protrusion and a connection end of the nail has an axially parallel recess in order to couple the targeting and/or nailing instrument. The coupling system couples the targeting/nailing instrument and nail in their rotational position when they contact axially and whereby a connector is also provided in order to connect the targeting and/or nailing instrument and the nail in an axially fixed but also releasable manner. The connection end of the targeting and/or nailing instrument has an end section that engages approximately in one end of the bore-hole section of the nail and the end section and bore-hole section have a deformable element for a releasable snap connection of the parts with the simultaneous contact of the axially parallel protrusion and the axially parallel recess.

Abstract: Techniques for providing a virtual operating space for performing a virtual surgical procedure. The technique includes generating a three-dimensional view of a virtual operating space comprising one or more virtual objects capable of being manipulated by a user for performing one or more operating steps in a virtual surgical procedure on one or more virtual patients. The technique also includes manipulating the one or more virtual objects in the virtual operating space to perform all or part of a virtual surgical procedure. The technique further includes generating a virtual radiographic image of one or more portions of the virtual patient at least following the performance of one or more steps of the virtual surgical procedure to provide visual feedback to the user regarding the performance of the one or more steps in the virtual surgical procedure.

Abstract: An ultrasonic handpiece is used for augmenting a bone screw. The handpieces comprise a housing, an ultrasonic converter shiftingly accommodated in the housing, and a sonotrode connected to one end of the ultrasonic converter. The sonotrode protrudes from the housing into the bone screw. An adjuster wheel is adjustably connected to the housing. A spring is provided the ends of which are supported by the ultrasonic converter and the adjuster wheel, respectively. The ultrasonic converter is preloaded in the direction away from the adjuster wheel by setting the adjuster wheel, thereby the sonotrode is urged with a selected force into the bone screw and the augmentation material is pressed out of the bone screw and into the bone.

Abstract: A device and method for fixation of bone fractures has a bone screw comprising a shank with a threaded end portion, on the outer surface. The screw has a through bore with two bore portions differing in diameter. A step in the diameter is formed between these bore portions and is located within the end of the screw having the thread. This step in diameter can support a metal insert which in turn supports a polymer pin when the latter if pressurized with a sonotrode in the bone screw. Together with an applied ultrasonic vibration the pressure fluidizes the polymer pin and presses the material through holes configured in the wall of the bone screw and into surrounding bone.

Abstract: A measuring device for measuring the length of a through-hole in a bone has an elongated hollow sleeve preferably having an outer cross-section adapted to a cross-section of the through-hole and having an opening at its distal extremity. The measuring device further comprises a rod having a hook-shaped end at its distal extremity. The rod is at least partly housed within the hollow sleeve and is slidable with respect to the sleeve along its longitudinal axis. The sleeve and the rod are designed such that, when the rod is slid to a distal position of the sleeve, the hook-end can be displaced such as to protrude through the opening of the sleeve and laterally over the lateral outer surface of the sleeve. When the rod is slid to a proximal position of the sleeve, the rod no longer protrudes laterally over the outer surface of the sleeve.