Abstract: The present disclosure relates to prosthetic implants, components of prosthetic implants, and methods of fixating the components to one another and, especially fixation of the implants to bone.

Abstract: Orthopaedic implants, orthopaedic implant sets, and/or methods for making the same. Aspects and embodiments of the present invention may include orthopaedic implants having an elongated insertion region including proximal, distal, and transition portions, wherein at least portions of at least one face each of the proximal and transition portions are defined by spaced apart constant radii of curvature. The same or other aspects and embodiments may include sets of orthopaedic implants in which proximal portions of the implants grow at different rates than distal portions of the implants. The same or other aspects and embodiments may include methods for making implants and/or sets of implants by studying the geometries of differently sized bony anatomies.

Abstract: Orthopaedic implants, orthopaedic implant sets, and/or methods for making the same. Aspects and embodiments of the present invention may include orthopaedic implants having an elongated insertion region including proximal, distal, and transition portions, wherein at least portions of at least one face each of the proximal and transition portions are defined by spaced apart constant radii of curvature. The same or other aspects and embodiments may include sets of orthopaedic implants in which proximal portions of the implants grow at different rates than distal portions of the implants. The same or other aspects and embodiments may include methods for making implants and/or sets of implants by studying the geometries of differently sized bony anatomies.

Abstract: A method for forming an implant for a bone comprises the step (20) of generating a first general shape for the implant having a length extending along a long axis of the bone. A step (40) determines an area moment of inertia of a cross section of the implant. Step (40) also determines an area moment of inertia for a cross section of bone coplanar to the cross section of the implant. A percent stress shielding is calculated (50) from the area moments of inertia of the implant and the bone. A step (60) compares the calculated percent stress shielding to a preset threshold. Iteratively, additional general shapes are generated (80) for the implant by locally adjusting the cross section of the implant until the calculated percent stress shielding meets the preset threshold.

Abstract: Instruments for use in anterior approach total hip arthroplasty. Instruments according to certain embodiments of the invention connect to a shaping member such as a broach, reamer or osteotome that is used to prepare the intramedullary canal of a desired femur or other bone for total hip arthroplasty. Such an instrument according to such embodiments can be configurable to allow operation on either the left or right leg, and in doing so to provide lateral offset and anterior offset of the instrument handle relative to the shaping member so that the patient's gut, musculature or other bodily portions may be avoided while still providing desired leverage and control over the shaping member to prepare the intramedullary canal.

Abstract: Improved instruments for modifying a shape of a proximal femur of a patient for installation of a stem of a femoral component of a prosthetic hip during hip replacement surgery, comprising a handle including an elongated shaft extending downward approximately in a z-direction, a first offset extending from a bottom of the elongated shaft approximately in a y-direction, a second offset extending from the second offset approximately in an x-direction, and a shaping member elongated downward from the second offset approximately in the z-direction. Provided is an improved femoral broach and an improved osteotome. Also provided is a method of improving a patient's positioning during hip replacement surgery by using a variable configuration mattress for positioning the patient.

Abstract: An intramedullary stem that provides enhanced distal fixation and flexibility and methods for implanting the stem. Certain embodiments of the stem have primary and secondary flutes (or ridges or wedges). Other embodiments have transitional regions.

Abstract: Improved instruments for modifying a shape of a proximal femur of a patient for installation of a stem of a femoral component of a prosthetic hip during hip replacement surgery, comprising a handle including an elongated shaft extending downward approximately in a z-direction, a first offset extending from a bottom of the elongated shaft approximately in a y-direction, a second offset extending from the second offset approximately in an x-direction, and a shaping member elongated downward from the second offset approximately in the z-direction. Provided is an improved femoral broach and an improved osteotome. Also provided is a method of improving a patient's positioning during hip replacement surgery by using a variable configuration mattress for positioning the patient.

Abstract: An intramedullary stem that provides enhanced distal fixation and flexibility and methods for implanting the stem. Certain embodiments of the stem have primary and secondary flutes (or ridges or wedges). Other embodiments have transitional regions.

Abstract: Various embodiments of the invention relate to sleeves (30) having lengths that allow the sleeve to engage a patient's femoral intramedullary canal in a mid to distal region rather than only proximally. In preferred embodiments, the sleeve length is between about 60 millimeters to about 150 millimeters. In certain embodiments, the sleeve is adapted to extend beyond the lesser trochanter, to or near or beyond a patient's isthmus, and provide diaphyseal fixation.

Abstract: Systems, methods, and apparatuses for clamping and reclamping an orthopedic surgical cable used in conjunction with an orthopedic implant device, a bone, and/or bone implant or structure. A sequence for a method in accordance with various embodiments the invention includes providing a surgical cable clamp and an orthopedic surgical cable. Next, mounting a portion of the surgical cable to the surgical cable clamp. Next, applying a force to the portion of the surgical cable so that the surgical cable is restrained or secured relative to the surgical cable clamp with a first tension in the surgical cable. Then releasing the force on the extended portion of the surgical cable so that the surgical cable can be repositioned relative to the surgical cable clamp. Finally, applying another force to the extended portion of the surgical cable so that the surgical cable is again restrained or secured relative to the surgical cable clamp.

Abstract: Systems, methods, and apparatuses for clamping and reclamping an orthopedic surgical cable used in conjunction with an orthopedic implant device, a bone, and/or bone implant or structure. Systems and methods provide a clamping body, a clamping mechanism, and a force application member that cooperate to allow tensioning and re-tensioning of a surgical cable.

Abstract: Resorbable devices and systems and methods utilizing the resorbable devices for adjunct stabilization of joint implants in the tubular bones of humans or animals during joint replacement procedures. The resorbable devices are at least partially resorbed by the body over a predetermined period of time, thereby allowing for bone ingrowth into a resulting void.

Abstract: Systems, methods, and apparatuses for clamping and reclamping an orthopedic surgical cable used in conjunction with an orthopedic implant device, a bone, and/or bone implant or structure. At least one combination and device in accordance with various embodiments of the invention include a clamping body adapted to positioning within a patient's body; and a clamping mechanism adapted to securing an orthopedic cable to the clamping body, creating a first tension in the orthopedic cable, releasing the tension in the orthopedic cable, and re-securing the orthopedic cable relative to the clamping body to secure another tension in the orthopedic cable. A sequence for a method in accordance with various embodiments the invention includes providing a surgical cable clamp and an orthopedic surgical cable. Next, mounting a portion of the surgical cable to the surgical cable clamp.

Abstract: Systems, methods, and apparatuses for clamping and reclamping an orthopedic surgical cable used in conjunction with an orthopedic implant device, a bone, and/or bone implant or structure. At least one apparatus and system in accordance with various embodiments of the invention include a clamping body adapted to positioning within a patient's body; and a clamping mechanism adapted to securing an orthopedic cable to the clamping body, creating a first tension in the orthopedic cable, releasing the tension in the orthopedic cable, and re-securing the orthopedic cable relative to the clamping body to secure another tension in the orthopedic cable. A sequence for a method in accordance with various embodiments the invention includes providing a surgical cable clamp and an orthopedic surgical cable. Next, mounting a portion of the surgical cable to the surgical cable clamp.

Abstract: Shrouds for use with an implant in order to allow a surgeon to determine when the implant has been inserted into the femoral canal (or other bone as applicable) a proper distance during implantation. Such a shroud is useful to ensure that the patient's limb after prosthesis implantation is the correct length. The shrouds described have a distal surface which, when properly positioned relative to the implant, indicate proper insertion distance, such as by abutting a portion of the femur upon reaching correct insertion distance. The shrouds may contain a cavity which receives all or part of the neck or taper of the implant in order to position the distal surface correctly. The shrouds described can also help determine correct version of the implant, retain cement in the bone canal or cavity during implantation, pressurize the cement, and protect surfaces of the implant during the implantation.

Abstract: An inserter includes a frame having a central bore through which a threaded rod is inserted, the threaded rod being used to secure the inserter to an object such as an implant. A thumbscrew is used to thread the rod into the object. A biasing member is located between the thumbscrew and a slider. A lever on the inserter is provided such that when the lever is closed, the slider is forced toward the thumbscrew, compressing the biasing member and generate opposing forces applied to the thumbscrew and slider. These opposing forces are transferred to the rod and frame and produce a resultant force that causes a compressive force to be exerted between the inserter and object. This resultant force firmly seats the inserter on the object and reduces the possibility that any blows applied to the inserter are diverted to the rod causing the rod to loosen or disengage.

Abstract: A cemented acetabular prosthesis includes a cup body having a relative thin wall (for example, 2 mm). The body has a concave surface, a convex surface, and an annular rim. A plastic liner registers into a concavity of the cup body, the liner having a wall with a liner wall thickness much greater than the cup body wall thickness and a concave surface and a convex surface that registers and fits the concave surface of the cup body. The cup body wall provides a plurality of openings. Some of the openings are bone screw receptive openings that are reinforced with an annular reinforcement that extends away from the convex surface of the cup body. Other openings are unreinforced openings that allow cement to flow from the concave to the convex side of the cup body and into the patient's acetabulum during surgery. The cup body has a peripheral buttress portion for supporting a volume of cement of the cement mantle at a peripheral interface position between the liner and the body.

Abstract: An alignment guide for positioning a saw guide at a predetermined position on the distal femur is placed on the femur and receives an intramedullary rod inserted in the femur. The guide has an arm for coupling the saw guide block. The guide includes an intercondylar saddle that engages the intercondylar notch of the femur to align the saw guide at a predetermined position proximal to the intercondylar notch.

Abstract: A technique for producing a highly convoluted surface on a prosthetic device is achieved by applying a layer of aspherical metallic powder on the surface of the device. The metallic powder, which may be the same as or different from the material of the device, is applied in a thickness of up to approximately 200 microns and has a size range of approximately -80 to +635 mesh so as to result in a desirable surface roughness defined by a peak to valley variation of up to approximately 200 microns. A resulting device has an enhanced surface which provides, alternatively, an improved press fit into a receiving bone, or improved cement fixation, or improved reception of a ceramic coating.