A method of implanting a medical device including forming a tunnel at least partially through a patient's bone, placing the medical device on the bone so that a stress-diffusion element (i.e., a stem) extending from the medical device at least partially extends into the tunnel, and securing the medical device to the bone. The medical device includes a hemispherical cup having a bone-abutment exterior surface, an interior surface defining a cavity, a circumferential rim extending between the exterior surface and the interior surface, and at least one aperture extending between the exterior surface and the interior surface. The stress-diffusion element is formed to extend from and be oriented with respect to the cup based on whether the surgical implant is to be used on a left side or right side of the patient for reconstruction of the segmental acetabular defect.

Disclosed is an endoprosthesis for implantation in bone surgery, in particular hip surgery, without the use of surgical cement. The hip joint endoprosthesis for implantation in bone surgery of ball-and-socket joints, in particular hip joint, has a moving connection provided by the contact surface of two modules of the endoprosthesis femoral head and acetabulum, whereas their surfaces which are in contact with the bone next to the joint have a shape similar to a sphere, on which pins are placed, with an axis principally parallel to the lengthwise axis of the endoprosthesis, and at least two cutting blades with an arc-shaped cross-section outline, creating a groove for removal of the products of cutting.

Glenoid components with asymmetric fixation points are provided. Also, methods and devices are provided for the optimization of shoulder arthroplasty component design through the use of medical imaging data, such as computed tomography scan data. The methodology may improve the understanding of glenoid anatomy through the use of medical imaging data and 3D modeling, and for glenoid components that exploit this methodology. The methodology provides for how anatomical features change based on the specific location in the glenoid. The methodology can optimize loading and fit at the bone-device interface. Asymmetrical glenoid components are provided with significantly improved initial fixation.

A surgical implant includes a hemispherical cup having a bone-abutment exterior surface defining a convex side of the hemispherical cup and an interior surface defining a concave side of the hemispherical cup with a cavity, and a stress-diffusion element extending directly from the bone-abutment exterior surface of the hemispherical cup at an anteverted orientation to the hemispherical cup. The implant may further include at least one aperture defined by a circumferential surface extending between the bone-abutment exterior surface and the interior surface, the at least one aperture operable to receive a screw therethrough.

Porous regions are formed using selected additive manufacturing techniques. The porous regions can assist in fibro-inductive regions and/or osteo-inductive regions. A prosthetic member can be formed completely with the additive manufacturing technique and/or the additive manufacturing techniques can be used to form an augment portion that is added to the prosthetic member formed separately.

The invention relates to an acetabular cup (4) and a cup insert (3) for a hip joint prosthesis (12), wherein the cup insert (3) is coupled to the acetabular cup by means of a clamping cone (5) of a conical clamping device in the equatorial region (7) of the two components (3, 4) and, in the unloaded state of the cup insert (3), a gap (8) is provided between the two components (3, 4) below the clamping cone (5) to the pole (6), said gap being delimited by the radial contours of the two components (3, 4). In order to reduce the tensile stresses in the cup insert, the radial contours of the two components (3, 4) have identical geometric elements in the same order, starling front the lower cone end (9) to the pole (6), and tangential or substantially tangential transitions exist between the geometric elements.

Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. Mounting members include, for example, flanges, blades, hooks, and plates. In some embodiments, the orthopedic attachments may be adjustably positionable about the base member or other attachments, thereby providing modularity for assembling and implanting the device, and various securing and/or locking mechanisms may be used between the components of the implant.

Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment.

An acetabular hip implant includes a plurality of rings secured to an acetabular shell component. A method of fabricating a customized, patient-specific version of such an implant is also disclosed.

An acetabular prosthesis for use in a hip arthroplasty surgical procedure includes an acetabular cup cage assembly including an outer cup cage and an inner cup cage. The outer cup cage includes a hemispherical cup and a mounting flange. Similarly, the inner cup cage also includes a hemispherical cup and a corresponding mounting flange. The hemispherical cup of the inner cup cage is sized to be received into the hemispherical cup of the outer cup cage, and the two cup cages are rotatable relative to each other to position the mounting flanges into a desired position on a hip bone of a patient.