A total joint prosthesis that achieves non-invasive length modification and a method of using the same is provided. A gearbox housing within the implant contains a lengthening mechanism comprising a rotatable magnetic rod mechanically coupled to a lengthening screw through a series of parallel gear sets. The lengthening screw is coupled to an internally threaded implant neck. An external magnetic device containing at least one rotatable magnet produces a magnetic field. After total joint arthroplasty, the magnetic field of the external device forces rotation of the internal magnetic rod, causing rotation of the lengthening screw. Rotation of the lengthening screw causes the neck to either compress toward or extend away from the housing, adjusting the overall length of the implant and limb. This invention thus provides non-invasive means for post-operative limb-length modification after total joint arthroplasty and is useful in treating conditions such as limb-length discrepancy.

An orthopaedic surgical instrument system includes a first broach including a first end configured to be separately secured to a handle and a tapered body having a plurality of cutting teeth defined therein, and a second broach including a first end configured to be separately secured to the handle in place of the first broach, a first tapered body extending distally from a second end positioned opposite the first end, and a second tapered body extending distally from the first tapered body. The tapered body of the first broach and the first tapered body of the second broach have a first outer geometry and the second tapered body has a second outer geometry different from the first outer geometry.

Provided is an implant receiving apparatus (10) comprising a core (20), the core defining a first end (30) and a second end (40), a wall (50) comprising inner surface (60) and outer surface (70) and a centerline (80) extending centrally of and between the ends (30, 40), the size and shape of the core (20) defining a socket or cavity (90) adapted to receiving an implant engaging member (100), wherein the wall comprises at least one threaded bore (110) for engaging a screw retainer, the bore traversing through the wall from the inner surface to the outer surface. Also provided is an implant engaging member, an implant system comprising both an implant engaging member and implant receiving apparatus as well as kits comprising an implant receiving apparatus.

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.

An orthopaedic surgical instrument system includes a first broach including a first end configured to be separately secured to a handle and a tapered body having a plurality of cutting teeth defined therein, and a second broach including a first end configured to be separately secured to the handle in place of the first broach, a first tapered body extending distally from a second end positioned opposite the first end, and a second tapered body extending distally from the first tapered body. The tapered body of the first broach and the first tapered body of the second broach have a first outer geometry and the second tapered body has a second outer geometry different from the first outer geometry.

An orthopedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.

An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.

An orthopaedic system and method to assemble an orthopaedic prosthesis is disclosed. The system may also include prosthetic trial components, which may be used to size and select the components of the orthopaedic prosthesis. The system may include components of the orthopaedic prosthesis such as, for example, a prosthetic femoral component, a prosthetic tibial component, a prosthetic stem component, and a prosthetic sleeve component.

An arthroplasty system for replacing a natural articular surface on a bone may include an arthroplasty prosthesis and a bone anchoring component. The arthroplasty prosthesis may include a joint-facing side having an articular surface and a bone-facing side having a first adjustable attachment feature. The bone anchoring component may include a bone engagement surface securable to a resected surface of the bone and a second adjustable attachment feature. The first adjustable attachment feature may be configured to movably mate with the second adjustable attachment feature to movably couple the bone anchoring component to the bone-facing side of the arthroplasty prosthesis.