A prosthesis for at least a portion of a bone, in particular a bone or portion thereof to which, in the natural condition, a tendon of a muscle is attached, wherein the prosthesis is manufactured of a metal or an alloy thereof and is provided with at least one area situated in the surface of the prosthesis that faces outward once the prosthesis has been placed in the body, the area being formed by a layer provided with open spaces that are connected to each other, wherein the open spaces are dimensioned for allowing the growth of bone tissue therein.

An implant may include a body having a first portion and a second portion and a structural member having a central member curve. In addition, the structural member may be exposed on an outer surface of the implant. Further, the central member curve may include a winding segment, and the winding segment of the central member curve may wind around a fixed path extending from the first portion of the body to the second portion of the body. Also, the central member curve may make one or more full turns around the fixed path. And, the structural member may have a member diameter at the winding segment, wherein the winding segment has a winding diameter corresponding with the full turn around the fixed path and the member diameter is greater than the winding diameter.

A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.

A pedicle insulator implant is designed to protect the nerves and surrounding tissue from injury by pedicle screws or other surgical devices and instruments. The implant is configured to shield a fixture, reduce nerve root irritation, and diminish loosening of the fixture, when the fixture is implanted into the void of a target site. The implant includes features for stabilizing and securing the implant within the void at the target site. For example, in one embodiment, the implant includes one or more ridges and one or more teeth sections that stabilize the implant against rotational and extractive forces that could disturb the implant.

A glenoidal implant for a shoulder prosthesis includes an articular body having two opposite faces which are an articulation face suitable for cooperating with an articulation head of a humeral implant, and an anchoring face from which at least one anchoring stud protrudes for an anchoring in the glenoid cavity including a main anchoring stud at least partially covered with a porous or rough surface coating promoting an osseointegration. The main anchoring stud is provided internally with a central hole extending along a central axis of symmetry of the main anchoring stud and provided to allow guiding a trephine.

Provided is a glenoid implant system that includes a tray component that includes a bone-facing surface and a bearing-facing surface on opposite side of the bone-facing surface; and a bearing component that includes an articulating surface that is generally concave and a back side on opposite side of the articulating surface that is generally convex, wherein the articulating surface is configured for engaging a convex humeral head and the back side is configured for engaging the bearing-facing surface of the tray component thus enabling the bearing component to slide about on the tray component while the convex humeral head articulates against the articulating surface.

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 present disclosure relates to the field of medical instruments, in particular to a pad for acetabular bone revision and reconstruction and a fixing structure for a pad and an acetabular cup prosthesis. The pad is located between an acetabular cup prosthesis and the acetabular bone, and is connected to the acetabular cup prosthesis and the acetabular bone respectively. The pad includes a first component and a second component which has the same or different radius and shape as or from the radius and shape of the first component; the first component is movably connected with the second component; and the shape of the connected first component and second component is matched with a defective part of the acetabular bone.

Intervertebral implants, assemblies, and methods thereof. An intervertebral implant includes opposing chamfered edges to reduce a diagonal distance between the edges. The reduced diagonal distance minimizes distraction of an intervertebral disc space during insertion of the implant. A tool for insertion and rotation of the implant is also provided.