A stemless humeral head replacement system including a base plate and a humeral head implant. The base plate includes a bone facing side, an implant side opposite the bone facing side, a curvate perimeter, at least one fin protruding from the bone facing side a first distance and extending linearly a length along the bone facing side, and an implant engagement structure on the implant side. The humeral head implant includes a curvate implant surface and a base plate engagement structure opposite the curvate implant surface, the base plate engagement structure configured to couple to the implant engagement structure of the base plate.

An orthopedic implant which generally includes a frame structure and a porous structure. Both the frame and porous structure at least partially define at least six surfaces which make a three-dimensional profile of the implant. The porous structure is positioned at least partially within the three-dimensional profile.

A porous biocomposite material including a polymer matrix having pores defined by several surfaces and collagen on the surface of the pores and the outer surfaces of the polymer matrix, the ratio, by weight, collagen to polymer matrix is from 20:80 to 40:60. The polymer matrix of the porous biocomposite material includes a copolymer which is prepared from a poly(ε-caprolactone) diol, a poly(lactide-co-glycolide) diol and a lysine diisocyanate (LDI). Also included are an implant which is a biodegradable, porous foam and with similar biomechanics to the normal meniscus, with tensile, compressive and tear strength, and preventing the pores from collapsing under condyle-tibia pressure. It serves as a scaffold for damaged meniscus repair or replacement, indicated for grade 3 or 4 terminal knee arthrosis, for the prevention of treatment, by cartilage regeneration, of advanced knee arthrosis, to avoid knee prostheses in young patients.

A joint prosthesis assembly includes a stem that includes a first end, a second end, and a length that extends between the first and second ends. The stem includes a cylindrical opening that extends into the second end along a portion of the length and terminates within the stem so as to form a base surface that defines an end of the cylindrical opening. The assembly also includes a joint component that has an articular side, a bone contact side, and a cylindrical boss that extends from the bone contact side. The boss is slidingly receivable within the cylindrical opening so that, when the stem and joint component are implanted, the stem is unconstrained in an axial direction and constrained by the stem in a direction transverse to the axial direction.

A moldable medical membrane is provided, which includes a compact layer and a porous layer. The compact layer is formed from a first material. The porous layer is disposed on the compact layer, and the porous layer is formed from a second material. The moldable medical membrane has a moldable temperature range. A melting point of the compact layer is within the moldable temperature range, and a melting point of the porous layer is higher than the moldable temperature range.

A medical implant which comprises a porous lattice is fabricated with additive manufacturing techniques such as direct metal laser sintering. A CAD model of the porous lattice is created by defining a trimming volume and merging some lattice elements with adjacent solid substrate.

A stem (100) for use in a joint prosthesis, such as a femoral stem for a hip joint prosthesis, the stem comprising: a solid central core (102); a proximal outer layer (127) disposed over a proximal portion (101a) of the central core, wherein the proximal outer layer comprises a set of longitudinal ribs (120), defining slots (130) there between; and a distal outer layer made of a deformable porous material disposed over a distal portion (101b) of the central core. The arrangement is such that the stem (100) can be made with a relatively large diameter yet without being excessively stiff, for cementless fixation in osteoporotic patients. The deformability of the distal outer layer also mitigates against the risk of intraoperative bone fractures.

The present invention relates to a stabilized ankle prosthesis configured for use in patients with compromised soft tissue in the ankle. The prosthesis of the present invention is a two-component design comprising a stabilizing lip configured to constrain movement in the general direction of compromised soft tissue.

A multi-layered prosthetic element comprises a central body (1; 1′) of a substantially truncated conical shape and having a through axial cavity (2; 2′) open at both ends which gives the central body (1; 1′) a ring-shaped cross-section. The central body (1, 1′) comprises an outer portion (110; 110′), made of trabecular metal material, an inner portion (130; 130′), made of trabecular metal material, and an intermediate portion (120; 120′) made of metal material without significant porosity. The outer portion (110; 110′) and the inner portion (130; 130′) are integrally connected to the intermediate portion (120; 120′). The intermediate portion (120; 120′) is configured to mechanically resist to stresses transmitted to the inner portion (130; 130′) on one side and to the outer portion (110; 110′) on the other side.

An alloprosthetic composite implant comprising includes a structural porous scaffold having a pore density profile corresponding to a density profile of bone to be replaced. A plurality of cells are seeded within pores of the porous scaffold and grown by incubation. The cells may include osteoblasts and/or stem cells to form the structure of the implant, and one or more cartilage layers may be grown on top of the scaffold. The pore density profile of the scaffold may be formed based on one or both of the bone density profile of the bone to be removed, and the bone density profile of the native bone that will be in contact with the alloprosthetic implant. A robot may be employed reo resect the native bone and also to shape the alloprosthetic implant to fit into place in the native bone.