A spinal fusion implant including a body and a jacket is disclosed. The jacket includes at least two radiopaque markers extending therefrom for use in determining the position of the implant after placement between intervertebral bodies. Methods of implanting and evaluating positioning of the implant are also disclosed.

The three-dimensional lattice structures disclosed herein have applications including use in medical implants. Some examples of the lattice structure are structural in that they can be used to provide structural support or mechanical spacing. In some examples, the lattice can be configured as a scaffold to support bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. The lattice structures are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

One aspect of the disclosure relates to an adjustable implant. The adjustable implant may include a housing configured to be coupled to a first bone portion; an adjustable portion configured to be coupled to a second bone portion, the adjustable portion having a first bar; an actuator rotationally mounted within the housing, the actuator including a protrusion extending therefrom; and at least one gear having an anvil coupled thereto, wherein the protrusion of the actuator is configured to engage the anvil during rotation of the actuator to cause the adjustable portion to move relative to the housing. The protrusion may include an impact hammer surface. Also provided herein are distraction and compression systems including adjustable implants and adjustment devices therefor, and methods for adjusting such adjustable implants.

A rhomboid shaped spinal implant may include a proximal surface that extends from a first lower end to a first upper end thereof a first distance, and a distal surface that extends from a second lower end to a second upper end thereof a second distance. The implant may include a superior surface that extends from the first upper end of the proximal surface to the second upper end of the distal surface a third distance, and an inferior surface that extends from the first lower end of the proximal surface to the second lower end of the distal surface a fourth distance. In various embodiments, the first distance is greater than the second distance, and the third distance is less than the fourth distance. In some embodiments, at least one bone screw aperture defines a trajectory extending in a direction substantially perpendicular to the superior and/or inferior surface.

A blade-like stem of a hip joint prosthesis for anchoring in the femur, including a prosthesis neck portion and a femur-anchoring portion extending therefrom and having a proximal end and a distal end, the femur-anchoring portion including a proximal arcuate portion extending from a location adjacent the proximal end and having a radius of curvature that changes in a distal-to-proximal direction, and the femur-anchoring portion further including a distal tapered portion extending from the proximal arcuate portion toward the distal end.

The methods disclosed herein of generating three-dimensional lattice structures and reducing stress shielding have applications including use in medical implants. One method of generating a three-dimensional lattice structure can be used to generate a structure lattice and/or a lattice scaffold to support bone or tissue growth. One method of reducing stress shielding includes generating a structural lattice to provide sole mechanical spacing across an area for desired bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. Some methods are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

The invention disclosed herein includes implant features that can be used, in some embodiments, on devices with a volumetric density of less than about 100 percent and devices with a surface roughness of some value. The implant features include one or more protrusions mounted on the forward edge of an implant that can ease the distraction of tissue during implantation and reduce the occurrence of damage during a manufacturing process. In some embodiments, the protrusions have gaps in a non-axial direction with respect to the implant to allow axial compression with respect to the protrusions. In some embodiments, the protrusions have a circumferential gap between them and a body of a device to reduce any impact on the device's elastic modulus.

Intervertebral fusion device comprising a superior component, an inferior component, and a core component. The superior component comprises first and second superior parts which are coupled to each other to allow the first and second superior parts to move apart to thereby increase a perimeter of the superior component top side. The inferior component comprises first and second inferior parts which are coupled to each other to allow the first and second inferior parts to move apart to thereby increase a perimeter of the inferior component bottom side. The core component is configured for insertion between the superior and inferior components whereby separation between the superior and inferior components is determined. The core component interengages with each of the superior and inferior components upon insertion. The superior and inferior components are unattached to each other before the core component is inserted between the superior and inferior components. As the core component is progressively inserted between the superior and inferior components, the core component: bears against the first and second superior parts to push the first and second superior parts progressively apart; and bears against the first and second inferior parts to push the first and second inferior parts progressively apart.

The methods disclosed herein of generating three-dimensional lattice structures and reducing stress shielding have applications including use in medical implants. One method of generating a three-dimensional lattice structure can be used to generate a structure lattice and/or a lattice scaffold to support bone or tissue growth. One method of reducing stress shielding includes generating a structural lattice to provide sole mechanical spacing across an area for desired bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. Some methods are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

An intervertebral fusion device 10 is disclosed. The intervertebral fusion device 10 comprises at least one endplate 40, 70 and a core component 20. The at least one endplate 40, 70 is configured to be received in an intervertebral space between first and second vertebrae. Each at least one endplate 40, 70 comprises first and second endplate parts which are coupled to each other to allow the first and second endplate parts to move apart to thereby increase a perimeter of the endplate. The core component 20 is configured to inter-engage with each at least one endplate 40, 70. The core component 20 is unitary. As the core component 20 is progressively brought into inter-engagement with the at least one endplate 40, 70, the core component bears against the first and second endplate parts to push the first and second endplate parts progressively apart.