摘要:
Disclosed is an acetabular positioning and insertion instrument. Additionally, a method of positioning an acetabular prosthesis with an insertion instrument is disclosed. The positioning instrument can include engaging members to contact an acetabular prosthesis and holding it relative to a portion of the instrument for both rotational and positioning of the prosthesis.
摘要:
Solid-state deformation processing of crosslinked high molecular weight polymers such as UHMWPE, for example by extrusion below the melt transition, produces materials with a combination of high tensile strength and high oxidative stability. The materials are especially suitable for use as bearing components in artificial hip and other implants. Treated bulk materials are anisotropic, with enhanced strength oriented along the axial direction. The material is oxidatively stable even after four weeks of accelerated aging in a pressure vessel containing five atmospheres of oxygen (ASTM F2003). Because of its oxidative stability, the deformation processed material is a suitable candidate for air-permeable packaging and gas sterilization, which has thus far been reserved for remelted crosslinked UHMWPE.
摘要:
A shoulder implant assembly constructed in accordance to one example of the present disclosure includes a frame member, a cup, and a glenosphere. The frame member can have a central hub and a first arm extending therefrom. The frame member can be configured to selectively and alternatively couple with first shoulder implant components in a traditional shoulder configuration and with second shoulder implant components in a reverse shoulder configuration. The cup can have a concave surface that is configured to articulate with a humeral head component. The cup can be selectively coupled to the frame member in the traditional shoulder configuration. The glenosphere can have an outer articulating surface that is configured to articulate with a second cup. The glenosphere can be selectively coupled to the frame member in the reverse shoulder configuration.
摘要:
The present teachings provide an ulnar head implant. The implant can include a head component adapted to articulate with a portion of the anatomy. The head component can define a coupling bore through a surface. The implant can also include a stem component having a base and a post that extends from the base for insertion into a prepared portion of an anatomy. The base can include a coupling feature. The implant can include an intermediate component receivable within the coupling bore and couplable to the coupling feature to couple the head component to the stem component.
摘要:
The present teachings are directed to a shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between a stem and a head. In one example, a prosthesis has a stem having a first longitudinal axis. The prosthesis can also include an adaptor including a first taper. The first taper can have a first taper axis. The prosthesis can include a head supported by the adaptor. The head can be selectively oriented and then coupled to the first taper and the combination can be selectively orientated and the coupled to the stem.
摘要:
The present teachings provide one or more surgical implements for repairing damaged tissue, such as in the case of a fixation procedure. For example, a system is provided that includes a bone plate having a first plurality of apertures and a targeting arm having a second plurality of apertures. Each of the second plurality of apertures of the targeting arm are configured for targeting of a bone fastener to one of first plurality of apertures. An imaginary targeting line extends from a first aperture of the first plurality of apertures to a first aperture of the second plurality of apertures. The system includes a mounting member, which includes a first end secured to the bone plate and a second end secured to the targeting arm. The second end of the mounting member is offset from the first end such that the second end is spaced from the imaginary targeting line.
摘要:
A method of implanting a knee replacement system in a leg with a femur and a tibia of a patient can include, implanting a femoral component onto a condyle of the femur and placing a trial tibial component on a tibial plateau of the tibia. The tension of a posterior cruciate ligament can be adjusted. The tension of an anterior cruciate ligament can be adjusted. The posterior position of the trial tibial component can be adjusted. The knee condition at toe off onset can be simulated during walking.
摘要:
A prosthesis to replace a portion of the anatomy, such as the humerus, can include a first shell. A second prosthesis can be positioned relative to the shell to provide the bearing surface to articulate with a glenoid prosthesis or glenoid. The second prosthesis can include a connection portion to engage a connection portion in the shell.
摘要:
An orthopedic device for preparing a knee joint for a prosthesis in a patient includes a femoral alignment guide. The femoral alignment guide has a patient-specific three-dimensional curved inner surface preoperatively configured from medical image scans of the knee joint of the patient to nestingly conform and mate and match only in one position to a corresponding three-dimensional femoral surface of a joint surface of the patient. The femoral alignment guide has a first guiding aperture corresponding to a distal portion of the femoral surface and a second guiding aperture corresponding to an anterior portion of the femoral surface.
摘要:
The present teachings provide one or more surgical instruments for repairing damaged tissue, such as in the case of a hip or femoral fracture. The present teachings can also provide one or more orthopedic screws that can be inserted in and/or removed from bone using any of a dedicated driver or any of commonly available drivers. The present teachings can further provide a surgical instrument that includes dual reconstructive wires and associated method, among other instruments and methods for repairing a hip or femoral fracture.