A manufacturing method of a sliding member for an artificial joint according to the present disclosure includes exposing a base member with ultraviolet rays in a state where the base member is in contact with an aqueous treatment solution containing a compound having 0.20 mol/L or more and less than 0.50 mol/L of phosphorylcholine group and a water-soluble inorganic salt.

A wing-shaped stemless hip joint prosthesis comprises a wing-shaped cup body which can be tightly covered on the femoral neck and the intertrochanter to fix an artificial spherical end and the femoral tissue into a whole, wherein the wing-shaped cup body integrally in an inverted cup form is inversely buckled outside the residual end of the femoral neck and is reinforced through a center lock pin and a tail pin; the wing-shaped cup body is provided with a lesser trochanter protecting wing buckled outside the lesser trochanter and a cup wing covered outside the intertrochanter line to acquire the additional supports and to be more stable accordingly; and the wing-shaped cup body is further provided with a large opening or hole so as to contain the nourishing blood vessels of the femur, accordingly decreasing the damage rate of the nourishing blood vessels and improving the postoperative recovery effect.

A flexible hip joint stem includes a shoulder body connecting piece, a flexible stem body, a stem tail, and a center regulating rod. The flexible stem body includes an inner-layer cylinder and an outer-layer cylinder. The inner-layer cylinder and the outer-layer cylinder are both composed of spiral springs, where the spring wire width of the spiral springs is basically equal to the screw pitch. The regulating rod passes through the shoulder body connecting piece and the flexible stem body, and is fixed with the stem tail by screwing the threads, which allows the inner-layer cylinder and the outer-layer cylinder to produce a certain degree of elastic deformation, limits the range of the elastic deformation, and enables the flexible hip joint stem to have sufficient supporting strength as a whole.

An adjustable orthopedic implant can include a neck assembly, a stem assembly, and a drive assembly having a first portion coupled to the neck assembly and a second portion coupled to the stem assembly. The drive assembly can include an actuator configured to rotate in response to the actuation signal, and a threaded rod coupled to the actuator and configured to rotate in response to rotation of the actuator. The threaded rod can engage a threaded receptacle of the stem assembly such that rotation of the threaded rod in a first direction urges the neck assembly and the stem assembly closer together, and rotation of the threaded rod in a second, opposite direction urges the neck assembly and the stem assembly further apart.

The present disclosure relates to an implant component (10, 20) having at least one connecting portion (30, 60), the connecting portion being at least partly coated with a Zr coating and the coating having a thickness of 1-20 μm, preferably 1-6 μm. The present disclosure further relates to a modular endoprosthesis comprising an implant component, to the use of a Zr coating to prevent crevice corrosion and/or fretting corrosion, and to the use of an implant component in patients suffering from a metal allergy.

The present invention relates to an animal femoral implant and, more specifically, to an animal femoral implant, which may enable artificial hip joint replacement for animals, may enable the implant to be firmly fixed to the animal femur by spontaneous bone growth of the animal, thereby preventing complications such as aseptic dissociation and bone resorption around the cement, which may occur when using bone cement, and may cause a porous part, which has relatively low strength due to a plurality of pores formed therein, to be protected by a frame part, which has relatively high strength due to a solid face formed therein, thereby preventing damage to the porous part in which the edge thereof is broken or bent by friction with the bone or by an external force in the process of inserting the femur implant into the animal femur and eliminating a problem in that porous particles that may be generated when the porous part is damaged penetrate into blood vessels and the like to cause various inflammatory reactions.

An orthopedic system for delivery of a therapeutic agent to a bone includes an elongate stem adapted to be inserted into an intramedullary canal, an inlet configured to receive the therapeutic agent, and one or more outlets configured to deliver the therapeutic agent to the bone. The elongate stem may comprise one or more protrusions to engage the bone, and one or more channels extending longitudinally therein, fluidly coupled to the inlet. The therapeutic agent flows from the inlet through the one or more channels and exits into the intramedullary canal through the one or more outlets. The system may be configured to allow one or more dimensions of the system to be adjusted to accommodate the anatomy of a patient.

A system and method for improving upon an ability of a surgeon to repair traumatic bone injury using new materials, components, and structures. A structure may be used as an implant or a component of an external fixator for a fractured long bone with that structure having anisotropic and viscoelastic properties, such as through additive manufacturing techniques.

A surgical tool for separating two components, for example removing a femoral head from a femoral stem, having a four bar chain whose four bars are a first handle (L1), an crossover component (L2), a second handle (L3) and a crossbar (L4) pivotally connected respectively by: a first joint (J1) between the first handle and the crossover component; a second, crossover joint (J2) between the crossover component and the second handle; a third joint (J3) between the second handle and the crossbar, and a fourth joint (J4) between the crossbar and the first handle, and wherein, upon application of a gripping force to the first and second handles, the first and second jaws separate from one another so as to separate the two components engaged therewith.

The femoral neck preserving hip implant includes a polymer femoral head molded onto a femoral head base, which is attached to a femoral neck rod to be inserted into the femoral neck of a patient. A metal acetabular cup is inserted into an acetabulum anatomy of a pelvis. The femoral head interfaces with the acetabular cup as a smooth plastic-to-metal spherical-surface joint. A main body shaft to be inserted into a femoral shaft has a diagonal hole therethrough located at a center line of the femur's neck to receive the femoral neck rod at a specified angle. A secured lock mechanism in the main body shaft above the diagonal hole is screwed down to compressively engage the femoral neck rod. Both the diagonal hole and the end of the femoral neck rod may have a slight taper. The femoral neck rod also has a radially outward extending flange that forms a contact feature that sits upon the resection plane of the femoral neck to stabilize against axial force loading.