A prosthetic implant is disclosed comprising: a first component comprising a first inner surface and a first outer surface, a second component comprising a second outer surface adapted to contact and engage with the first inner surface, the second component further comprising a second inner surface, a third component comprising a third outer surface adapted to contact and engage with the second inner surface, the third component further comprising a third inner surface, and a fourth component comprising a fourth outer surface adapted to contact and engage with the third inner surface; wherein the second component is rotatable relative to the first component about a first axis, the third component is rotatable relative to the second component about a second axis perpendicular to the first axis, and the fourth component is rotatable relative to the third component about a third axis perpendicular to the first axis and second axis; the first inner surface and the second outer surface are each formed with a first partial cylindrical shape, the first inner surface and the second outer surface each comprise a flat surface normal to the first axis and are engageable with one another such that the second component is rotatable relative to the first component about the first axis only, the second inner surface and the third outer surface are each formed with a second partial cylindrical shape, the second inner surface and the third outer surface each comprise a flat surface normal to the second axis and are engageable with one another such that the third component is rotatable relative to the second component about the second axis only, and the third inner surface and the fourth outer surface are each formed with a third partial cylindrical shape, the third inner surface and the fourth outer surface each comprise a flat surface normal to the third axis and are engageable with one another such that the fourth component is rotatable relative to the third component about the third axis only.

A prosthetic implant shaped as a portion of a human skeletal structure and including a contact and delivery portion shaped as a porous structure, in particular as a trabecular type structure, suitable for receiving a medical substance and configured to be arranged in contact with a bone of a patient during an operating configuration of the prosthetic implant and a support portion, coupled to the contact and delivery portion, including a plurality of ducts each having at least one inlet section, made at an operative part of the prosthetic implant that can be accessed from the outside by the surgeon in the operating configuration, and at least one outlet section which opens into the contact and delivery portion. The contact and delivery portion is configured to deliver the medical substance evenly onto the bone when the medical substance is injected through at least one duct of said plurality of ducts during the operating configuration.

The disclosure provides an articular fossa prosthesis and an articular prosthesis with the articular fossa prosthesis. An outer cup of the articular fossa prosthesis is disposed in a target skeleton, a lining is disposed in the outer cup, an articular head structure may be movably disposed in the lining, a first communicating passage communicated with an articular capsule is disposed on the outer cup, a second communicating passage communicated with the articular capsule is disposed on the lining, and the first communicating passage is communicated with the second communicating passage to guide a synovial fluid to a contact surface between the lining and the articular head structure.

The disclosure provides an articular fossa prosthesis and an articular prosthesis with the articular fossa prosthesis. An outer cup of the articular fossa prosthesis is disposed in a target skeleton, a lining is disposed in the outer cup, an articular head structure may be movably disposed in the lining, a first communicating passage communicated with an articular capsule is disposed on the outer cup, a second communicating passage communicated with the articular capsule is disposed on the lining, and the first communicating passage is communicated with the second communicating passage to guide a synovial fluid to a contact surface between the lining and the articular head structure.

Disclosed herein are implants with threaded inserts and methods for attaching the same to the implants. The threaded insert may define a first external dimension and include an internally threaded hole to receive a fastener. The implant may include a receiving hole with a proximal portion having a proximal diameter and a distal portion having a distal diameter. The distal diameter may be greater than the proximal diameter and substantial the same as the first dimension of the insert to secure the insert in the receiving hole. A method of attaching a threaded insert to a receiving hole of an implant with an insertion tool is also disclosed.

A method of anatomically positioning screw holes in an acetabular implant that can be used in surgery, such as a total hip arthroplasty. In some examples the method can be used to position holes in a shell of the implant. The method can include, for example, obtaining anatomic data including data defining an arch of bone behind an acetabulum of the living being, the arch of bone extending from a superior anterior portion to an inferior posterior portion of the acetabulum. The method can further include positioning a first series of holes along a first arched line within the acetabular shell, the first arched line determined based on the anatomic data for the arch of bone proximate the acetabulum of the living being.

Disclosed herein are implants with threaded inserts and methods for attaching the same to the implants. The threaded insert may define a first external dimension and include an internally threaded hole to receive a fastener. The implant may include a receiving hole with a proximal portion having a proximal diameter and a distal portion having a distal diameter. The distal diameter may be greater than the proximal diameter and substantial the same as the first dimension of the insert to secure the insert in the receiving hole. A method of attaching a threaded insert to a receiving hole of an implant with an insertion tool is also disclosed.

A method of anatomically positioning screw holes in an acetabular implant that can be used in surgery, such as a total hip arthroplasty. In some examples the method can be used to position holes in a shell of the implant. The method can include, for example, obtaining anatomic data including data defining an arch of bone behind an acetabulum of the living being, the arch of bone extending from a superior anterior portion to an inferior posterior portion of the acetabulum. The method can further include positioning a first series of holes along a first arched line within the acetabular shell, the first arched line determined based on the anatomic data for the arch of bone proximate the acetabulum of the living being.

A prosthetic implant is disclosed comprising: a first component comprising a first inner surface and a first outer surface, a second component comprising a second outer surface adapted to contact and engage with the first inner surface, the second component further comprising a second inner surface, a third component comprising a third outer surface adapted to contact and engage with the second inner surface, the third component further comprising a third inner surface, and a fourth component comprising a fourth outer surface adapted to contact and engage with the third inner surface; wherein the second component is rotatable relative to the first component about a first axis, the third component is rotatable relative to the second component about a second axis perpendicular to the first axis, and the fourth component is rotatable relative to the third component about a third axis perpendicular to the first axis and second axis; the first inner surface and the second outer surface are each formed with a first partial cylindrical shape, the first inner surface and the second outer surface each comprise a flat surface normal to the first axis and are engageable with one another such that the second component is rotatable relative to the first component about the first axis only, the second inner surface and the third outer surface are each formed with a second partial cylindrical shape, the second inner surface and the third outer surface each comprise a flat surface normal to the second axis and are engageable with one another such that the third component is rotatable relative to the second component about the second axis only, and the third inner surface and the fourth outer surface are each formed with a third partial cylindrical shape, the third inner surface and the fourth outer surface each comprise a flat surface normal to the third axis and are engageable with one another such that the fourth component is rotatable relative to the third component about the third axis only.

An acetabular shell for use in hip arthroplasty. The shell includes a first wall having an outer surface, an inner surface, and a rim. The shell further includes a second wall extending from the outer surface of the first wall. The second wall has an outer surface, an inner surface, and a rim. The rim of the second wall is spaced outwardly from the rim of the first wall.