A prosthetic hip alignment apparatus includes a medical instrument (20) comprising a mount attachable to a bone and first (22), second (30), third (40) and fourth (60) members. Adjacent ones of the first, second, third and fourth members are rotatable with respect to each other about a first axis, and between one of the first to fourth members and another means permitting rotation about second and third axes is provided. One of the member mounts a level (64) and wherein one of said members mounts direction indicator (65).

Intramedullary fixation device, having an intramedullary rod (2) which is provided for insertion thereof into a bone (1) and consists of a central screw (4) having a first free end comprising a stopper (7) and a second free end with a pre-tensioning nut (8), an alternating series of expanders (3) and bolts (5) being arranged in between, the bolt surfaces in contact with the expanders (3) having a wedge shape. The bolts (5) or expanders (3) may have no, or one or more variations in the dimensions of the different geometric parameters, in accordance with the adjacent expanders, along the length of the implant, and the central screw (4) may have a variable cross section. The device may have different additional components, such as an osteotomic base (9) for fixation of the musculature. The device promotes maximum nailing limited between these elements and produces a controlled peripheral radial deformation.

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.

A device provides a variety of fracture fixation options should a fracture occur after total hip arthroplasty or total knee arthroplasty, and provides associated methods and apparatus for application of provided fixation. The ability to pre-engineer fracture fixation contingent solutions into femoral or tibial components provides for a distinct clinical advantage in the planning and execution for periprosthetic fracture fixation. Said methods and apparatus include targeting devices which allow for intimate association of fixed angle locking screws in pre-drilled holes in an existing prosthetic, femoral nail, or other components including additional fixation components. Such apparatus and methods further include the use of alignment devices and other components to allow for ease of repair of fractures utilizing the pre-engineered solutions.

Intramedullary fixation device, having an intramedullary rod (2) which is provided for insertion thereof into a bone (1) and consists of a central screw (4) having a first free end comprising a stopper (7) and a second free end with a pre-tensioning nut (8), an alternating series of expanders (3) and bolts (5) being arranged in between, the bolt surfaces in contact with the expanders (3) having a wedge shape. The bolts (5) or expanders (3) may have no, or one or more variations in the dimensions of the different geometric parameters, in accordance with the adjacent expanders, along the length of the implant, and the central screw (4) may have a variable cross section. The device may have different additional components, such as an osteotomic base (9) for fixation of the musculature. The device promotes maximum nailing limited between these elements and produces a controlled peripheral radial deformation.

The disclosure relates to a femoral prosthesis device capable of preventing impingement and capable of being used with a constrained liner. In some examples, the device may include an elongated stem including a receiving section and a body section. The receiving section may have a bore. The device may include a calcar section including a through hole. The device may include an interface configured to be disposed on the receiving section between the body section and the proximal body. The device may include one or more fastener components configured to be disposed within the through hole and the bore when the stem and the proximal body are assembled so as to fasten/mate the elongated stem and the proximal body. When the stem and the proximal body are assembled and mated, the proximal body may be configured to radially rotate about the interface with respect to the elongated stem.

A trial neck for hip surgery and a method of attaching a trial neck to a femoral canal preparation instrument. The trial neck includes a body portion including a bore for receiving a proximal end of a femoral canal preparation instrument. The trial neck also includes an elongate neck extending from the body portion. The trial neck further includes a locking mechanism comprising a lever. The lever has a first end integral with the body portion. The lever also has a second end. The lever further has an engagement surface located intermediate the first end and the second end. The second end of the lever is actuable to urge the engagement surface against the proximal end of the femoral canal preparation instrument to secure the proximal end of the femoral canal preparation instrument within the bore.

A system and method for improving upon an ability of a surgeon to repair traumatic bone injury using new materials, components, and structures. A structure may be used as an implant or a component of an external fixator for a fractured long bone with that structure having anisotropic and viscoelastic properties, such as through additive manufacturing techniques.

A system and method for improving upon an ability of a surgeon to repair traumatic bone injury using new materials, components, and structures. A structure may be used as an implant or a component of an external fixator for a fractured long bone with that structure having anisotropic and viscoelastic properties, such as through additive manufacturing techniques.