Devices and methods are provided for optimized spinal fixation using additive manufacturing techniques to create implants with optimized structure for various surgical approaches, anatomies, etc. One exemplary embodiment includes a cage having an X-shaped connection that can bear a load during cage impaction. The cage can be additively manufactured to incorporate features such as variable wall thickness or material density to adjust properties of the cage, including load bearing capability, flexibility, radiolucency, etc. The cage can further include one or more of the connectors disposed between upper and lower endplates. In some embodiments, the cage can include a feature for coupling an insertion device thereto for introducing the cage into the body of a patient. In some embodiments, a plate can be appended to or integrally formed with a proximal end of the cage to assist with securing the cage to vertebral bodies.

A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The anchor may include various features to enhance the fixation of the base, including hooks, threads, and/or expandable members that may be transitioned from a contracted insertion condition to an expanded implanted condition once the base is positioned in the bone. The anchor and/or collar may also include additional features to enhance fixation, such as geometries and surface features to enhance fixation to bone. The anchor may include a plurality of chisel slots to facilitate removal of bone during a revision surgery.

Method of installing a medical device in a hip joint of a human patient, said medical device comprising a first piece comprising a convex contacting surface and a second piece comprising a concave contacting surface for creating a prosthetic joint, said medical device further comprising a releasing member configured to in a first state hold said first piece attached to said second piece, and in a second state release said first piece from said second piece said method comprising the steps of exposing the hip joint through a surgical or arthroscopic procedure, fixating said first piece of said medical device to a pelvic bone, fixating said second piece of said medical device to a femoral bone, placing said first piece in connection with said second piece, and holding said first piece to said second piece using said releasing member.

Osteogenesis scaffold such as for spinal fusion or an intermedullary nail includes a number of arcuate struts. The scaffold may have a functional modulus of elasticity that is a result of the modulus of the material of the struts together with the architecture of the struts, and may be within the range of 5 GPa and 75 GPa. An anisotropy of a physical property such as stiffness, compressive strength or elastic modulus corresponds to the same physical property of native bone in the vicinity of the intended implantation site.

This shoulder prosthesis glenoid component (2) has on one of its faces an articulation surface (S.sub.A) adapted to cooperate with a humeral head and having, on an opposite face (S.sub.G) adapted to be immobilized on the glenoid cavity (G) of a shoulder, a keel (4) for anchoring it in the glenoid cavity (G). This keel (4) comprises a body (5) that extends from the opposite face (S.sub.G). The keel (4) comprises at least one fin (6) projecting from the body (5) 2 which runs over at least a part of the perimeter of the body (5).

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body having a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear ends. The front and rear ends extend in a transverse direction and a central axis of the body extends from the rear end to the front end. The rear end defines a first fastener hole having a first central axis and a second fastener hole having a second central axis. The first and second central axes extend parallel to one another at an acute angle relative to the body central axis in the transverse direction.

A lumbar interbody fusion device includes a first wing, a second wing, and a bridge. The bridge has an arcuate resting shape and include a first end connected to the first wing, a second end connected to the second wing, and at least one aperture extending through the bridge in a radial direction relative to the arcuate resting shape of the bridge. The bridge is elastically deformable such that a distance between the first wing and the second wing may vary according to elastic deformation of the bridge.

Apparatuses, systems and methods such as a trial apparatus for selecting a position of a prosthetic head component on a humerus are disclosed. The trial apparatus can optionally include a body (36) and a thimble (38). The body can have a plurality of indicia (46) and can form a portion of a joint (37). The thimble can be couplable to the body via the joint. The thimble can be rotatable relative to the body via the joint and can include one or more indicia (62) for use with the plurality of indicia of the body. The thimble can be mountable to a prosthetic stem (30) implanted in the humerus.

An augment device for a joint endoprosthesis, the device including a sleeve surrounding a channel extending through the sleeve. The sleeve is formed of porous material for ingrowth of bony material, the sleeve comprising an inner face and an outer face. The sleeve further comprises a wall surrounding the channel, the wall being made of solid material and forming a sandwich structure with the porous material, wherein the wall forms a bulkhead between the inner face and the outer face. Thereby, the bulkhead wall will stop inflow of any cement across the sleeve from its inner to its outer face. The porous material on the outer face will be kept free from cement and its capability to promote bone ingrowth is reliably preserved. The augment devices are preferably provided as a set having different sizes and straight or stepped bottoms for improved versatility and maximum preservation of natural bone matter.

A device and methods for intervertebral spinal fusion of adjacent intervertebral bodies. An intervertebral spacer is positioned within a narrow disc space between adjacent intervertebral bodies of a patient. The spacer is arranged with upper and lower guides. The guides are adapted to simultaneously guide the deployment of upper and lower anchors of an anchoring device into their respective intervertebral bodies. The spacer is also adapted to lock the upper and lower anchors to the spacer in the deployed position.