The present invention is an internal osseointegrated transfemoral amputee implant device and related methods. The device is designed to restore the enclosed nature of the bone marrow system which is disrupted by amputation, plus provide a pressure tolerant (weight-bearing) surface and mechanical anchoring for the iliotibial band.

An interlocking reverse hip prosthesis including an acetabular cup having an opening in the central portion of the cup being implanted in the acetabular cavity. The opening has a circular extending wall protruding into the concave portion of the cup a distance at least equal to the diameter of the opening. The inward extension of the cup provides a female Morse taper suited for receiving the male Morse tapered post of the acetabular ball. After implantation of the acetabular cup, the surgeon can easily secure the cup to the acetabular bone using several screws without the interference of the central peg (as in prior implants). The femoral ball is then attached to the cup via central Morse taper.

Hip arthroplasty trial systems and associated medical devices, methods, and kits are described that can be utilized in situ to complete a femoral head trial. An example embodiment of a hip arthroplasty trial system includes a medical device and a femoral stem. The medical device has a head member, a spacer, a shaft, and a locking member. The spacer is disposed within the head member and is moveable from a first position to a second position. The shaft is disposed within the head member and contacts the femoral stem. The shaft is moveable from a first position to a second position. Movement of the shaft from the first position to the second position moves the spacer from its first position to its second position. The locking member is disposed within the head member and releasably attaches the shaft to the head member.

The invention relates to a device for producing a spacer having a casting mold with at least one filling opening, a valve seat, which is connected to the casting mold, wherein the valve seat has an regionally closed head side with at least one first feed-through, a valve body which is mounted so as to be rotatable relative to the valve seat and which has a sealing face, wherein at least one second feed-through is arranged in the sealing face, wherein the valve seat and the valve body together form a valve, wherein the valve is reversibly transferable into an open position and a closed position by rotation of the valve body relative to the valve seat, wherein, in the open position of the valve, the at least one first feed-through of the valve seat and the at least one second feed-through of the valve body are located above one another at least in places and provide a permeable connection through the valve into the casting mold, wherein, in the closed position of the valve, the at least one first feed-through of the valve seat is covered by the sealing face of the valve body, wherein, in the closed position of the valve, the at least one filling opening of the casting mold is covered and wherein the valve is connected on the side remote from the casting mold to a port for liquid-tight connection of a bone cement cartridge or the valve has such a port. The invention also relates to a method for producing spacers using such a device.

The invention relates to a device for producing a spacer having a casting mold, wherein the casting mold has a stem mold and a mold cavity with a spherical surface-shaped inner surface, wherein the stem mold and the mold cavity delimit a common interior, at least one filling opening and at least one vent element, wherein the stem mold is dimensionally stable on injection of bone cement paste into the casting mold, while, on injection of bone cement paste into the casting mold, the mold cavity is expandable at least in the region of the spherical surface-shaped inner surface by pressure imparted by the injected bone cement paste. The invention also relates to a method for producing spacers using such a device.

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.

An acetabular implant for a hip prosthesis including: a fixation cup defining an inner cavity having a substantially hemispherical shape, made of polyethylene and having, on its outer wall, means capable of favoring its fixation with cement within the acetabular cavity of the pelvis of the patient to be prosthesized, the inner cavity being coated with an armoring made of a biocompatible material of high hardness, said armoring defining the smooth inner cavity of substantially hemispherical shape intended to receive the mobile insert; an insert, mobile within said inner cavity and having its smooth outer surface intended to cooperate by ball and socket joint with the inner cavity of the fixation cup, and defining in turn a smooth inner cavity also having a substantially hemispherical shape; said mobile insert being made of high-density polyethylene; a prosthetic femoral head or prosthetic ball, secured to a femoral stem, of spherical shape and intended to be received in the inner cavity of the mobile insert and to form a second ball and socket joint.

A femoral orthopaedic prosthesis includes a metallic core extending from a proximal end to a distal tip. The metallic core includes a neck that is positioned at the proximal end and is configured to receive a prosthetic femoral ball. An elongated stem extends distally from the neck to the distal tip. The stem includes a proximal section extending distally from the neck, and a distal section that extends proximally from the distal tip. The elongated stem also includes a pair of spaced-apart beams that connect the proximal section to the distal section. An aperture is defined in the stem between the pair of spaced apart beams.

A medical device for implantation in a hip joint of a patient is provided. The medical device comprising a first piece being adapted to be fixated to the femoral bone and a second piece adapted to be fixated to the pelvic bone. The medical device further comprises a releasing which in a first state is adapted to hold said first piece attached to said second piece, and in a second state release said first piece from said second piece. The releasing member is adapted to change from said first state to said second state when a predetermined strain is placed on said releasing member by the connection with the first or second piece. The medical device further comprises a calibration member for calibrating the pre-determined strain required for said releasing member to change from said first state to said second state.

An apparatus, system, and method may be used to replace a natural or artificial articular surface of a joint, and to repair a bone that is associated with the joint. In some embodiments, the apparatus, system, and method may include a joint replacement prosthesis with a prosthetic articular surface, a support structure securable to the bone, and a first attachment interface. The system may also include a bone plate with a bone engagement surface securable to the bone on either side of a fracture formed in the bone, or a damaged area of the bone. The bone plate may include a second attachment interface that is attachable to the first attachment interface of the joint replacement prosthesis in order to couple the bone plate to the joint replacement prosthesis.