An implantation system includes a prosthesis shaft, such as a femoral shaft of a hip joint endoprosthesis, for insertion into a cavity of a bone. The prosthesis shaft has a proximal end and a distal end and defines a prosthesis shaft longitudinal axis. A shaft coupling element is formed at the proximal end for coupling to a first handling instrument for inserting the prosthesis shaft into the cavity and/or for extracting it therefrom. The implantation system includes an adapter apparatus with a first adapter device and a second adapter device. The first adapter device is configured to releasably couple to the shaft coupling element in force-locking and/or positive-locking manner in a coupling position. The second adapter device is configured to releasably couple to a second handling instrument. The second adapter device is also arranged or formed on the adapter apparatus laterally offset relative to the first adapter device.

A blade-like stem of a hip joint prosthesis for anchoring in the femur, including a prosthesis neck portion and a femur-anchoring portion extending therefrom and having a proximal end and a distal end, the femur-anchoring portion including a proximal arcuate portion extending from a location adjacent the proximal end and having a radius of curvature that changes in a distal-to-proximal direction, and the femur-anchoring portion further including a distal tapered portion extending from the proximal arcuate portion toward the distal end.

A medical implant system is described for inhibiting infection associated with a joint prosthesis implant. An inventive system includes an implant body made of a biocompatible material which has a metal component disposed on an external surface of the implant body. A current is allowed to flow to the metal component, stimulating release of metal ions toxic to microbes, such as bacteria, protozoa, fungi, and viruses. One detailed system is completely surgically implantable in the patient such that no part of the system is external to the patient while the system is in use. In addition, externally controlled devices are provided which allow for modulation of implanted components.

Hip implant systems described herein can include a distal stem, a proximal body, and a fastener. In some embodiments, the distal stem can include a cavity configured to receive the fastener when a portion of the distal stem is positioned within the proximal body. In some embodiments, the distal stem can include a threaded exterior surface configured to mate with a fastener when a portion of the distal stem is positioned within the proximal body. In some embodiments, a distal end of the distal stem can include an anterior relief configured to conform to interior surface of a femoral canal of a patient.

This invention provides a device and treatment method for replacing the hip (in either a hemiarthroplasty or total hip arthroplasty), which protects the remainder of the femur from fracture. Such a device is highly applicable to the treatment of patients with current or impending fractures of the femur, particularly those with metastatic bone cancer, where there is concern for current or future metastatic disease of the femoral neck or head, which would necessitate hip replacement. The implant consists of a two-piece arrangement with a separate femoral component and a securing, intermedullary rod/nail that is received in a locking arrangement by a longitudinal fenestration of the femoral component.

A bone void forming assembly includes a support member having a head portion and an elongate portion extending therefrom. A guide member is connected to the support member and has a guide body including a channel extending therethrough. The channel defines an axis offset and obliquely angled relative to an axis of the elongate portion. The assembly also includes reamer having a cutting head and a stop member. A bushing is slidably connected to the reamer between the stop member and cutting head and is slidably connectable to the guide body via the channel.

An intelligent implant includes an implantable reporting processor (IRP) and a component of a prothesis system having a receptacle. The IRP includes an antenna, an electronics assembly including a sensor, a hermetically sealed chamber containing the electronics assembly, a casing configured to house at least a portion of the electronics assembly, and a cover configured to house the antenna. The hermetically sealed chamber contains a gas. The casing and the cover abut one another to form an antenna chamber that houses the antenna and a filler. The receptacle of the component is configured to receive a portion of the IRP and to mechanically couple with the implantable reporting processor. The component of the prothesis system may be one of a tibial component or a femoral component of a knee prosthesis system, a humeral component of a shoulder prosthesis system, and a femoral component of a hip prosthesis system.

An implanted prosthesis for orthopedic and dentistry surgeries having a short body implant and an internal channel having an arborization system of orifices for delivery the necessary osteo-forming substances is disclosed. The implanted prosthesis can be created by additive manufacturing and includes a short body portion having a helicoid on the exterior wall, a collar, a neck, which are all aligned on the longitudinal axis of the prosthesis. The prosthesis neck has a hexagonal orifice for the insertion of dynamometric screwdriver to fix prosthesis in place. The hexagonal orifice communicates inside the body with a cylindrical orifice of variable length and diameter, which further communicates with the arborization system of orifices that provide lateral feed with cement and osteo-forming substances, and anchoring. In the middle of the central chamber there is a small threaded area in which a syringe to introduce cement or a threaded cap can be screwed.

A prosthesis, in particular a knee prosthesis or hip stem prosthesis, includes a shaft for arrangement and mounting in a long bone. The shaft has shaft sections extending parallel to the shaft axis that are separated from one another by a slotted intermediate space. The shaft portions are deformable by bending loads starting from an undeformed resting state such that the slotted intermediate space decreases. A first shaft portion includes a first projection provided on a side of the first shaft portion facing a second shaft portion and that forms a first constriction of the intermediate space. The first shaft portion also includes a first boundary surface for alignment against the second shaft portion. The first boundary surface is spaced at a distance from the second shaft portion in the undeformed resting state.

An implant or endoprosthesis suitable to be implanted in human or animal tissue includes two (or more than two) parts to be joined in situ. Each one of the parts includes a joining location, the two joining locations facing each other when the device parts are positioned for being joined together, wherein one of the joining locations includes a material which is liquefiable by mechanical vibration and the other one of the joining locations includes a material which is not liquefiable by mechanical vibration and a structure (e.g. undercut cavities or protrusions) suitable for forming a positive fit connection with the liquefiable material. The joining process is effected by pressing the two device parts against each other and by applying ultrasonic vibration to one of the device parts when the two parts are positioned relative to each other such that the two joining locations are in contact with each other.