A fixation device for a knee replacement. The fixation device includes a stem configured to be fixedly attached to one of a tibial component of the knee replacement and a femoral component of the knee replacement. The stem has a continuously tapered outer surface and has a distal end that is distal to said one of the tibial component and the femoral component. The stem is configured so that the continuously tapered outer surface engages a patient's bone when the stem is inserted into a bone canal within the patient's bone. In addition, the continuously tapered outer surface of the stem at the distal end is configured to mechanically fix the knee replacement to the patient's bone by being wedged within the bone canal.

A fixation device for a knee replacement. The fixation device includes a stem configured to be fixedly attached to one of a tibial component of the knee replacement and a femoral component of the knee replacement. The stem has a continuously tapered outer surface and has a distal end that is distal to said one of the tibial component and the femoral component. A tapered projection is positioned on the continuously tapered outer surface and is tapered in the same direction as the continuously tapered outer surface. The stem and the tapered projection are configured so that the continuously tapered outer surface and the tapered projection engage a patient's bone when the stem is inserted into a bone canal within the patient's bone. In addition, the continuously tapered outer surface of the stem at the distal end of the stem and the tapered projection are configured to mechanically fix the knee replacement to the patient's bone by being wedged within the bone canal.

A bone implant includes (a) a first layer provided over a first outer surface of the bone implant and being formed of a first material which is one of water-soluble and degradable in body fluids, the first layer having a first thickness and (b) a second layer provided over an outer periphery of the first layer and being formed of a biocompatible material, the second layer having a second thickness smaller than the first thickness.

Systems and methods are provided for generating microscale structures and/or nanoscale structures, surface profiles, and surface chemistries on medical devices. Embodiments disclosed herein utilize exposure of pulsed laser radiation on to a surface of a material by a pulsed laser. The pulsed laser according to embodiments disclosed herein is configured to emit at least one laser pulse toward the surface and thereby modify the profile of the surface in order to selectively promote or inhibit bioactivity and medical functionality of the material. By selectively promoting or inhibiting bioactivity of the material, enhanced biointegration at a cellular level may be achieved. For example, modifying the surface profile and/or surface chemistry of a first substrate material can improve adhesive and/or chemical bonding of the first material to a bioactive second coating material.

An implant assembly for a long bone is adapted to support an exo-prosthesis. The assembly includes a stem, a subdermal component and a percutaneous post. The stem has a proximal end that is adapted to be received in a surgically prepared medullary canal of the long bone, and a distal end having a surface that is adapted to promote bone ingrowth. The subdermal component includes a proximal portion that is adapted for attachment to the distal end of the stem, and a fixation surface that is adapted to promote soft tissue fixation. The percutaneous post has a proximal end that is adapted to be attached to the subdermal component.

The invention relates to a modular interim joint prosthesis that can be inserted into a long bone, for replacing an explanted joint endoprosthesis, wherein the interim joint prosthesis has a main body having a main-body coupling segment and has a shaft having a shaft coupling segment and the shaft coupling segment can be detachably coupled to the main-body coupling segment.

Methods of inserting and retaining interbody fusion material are disclosed. In some embodiments, the methods include inserting an anchored implant comprising a bone anchoring portion and an engagement portion. A method may also include inserting at least one bone fusion material within a disc space between two adjacent vertebral bodies. In some embodiments, a method includes driving the bone anchoring portion into an outer surface of at least one of the adjacent vertebral bodies and recessing the bone anchoring portion within the outer surface of the at least one adjacent vertebral body.

A medical implant system is described for inhibiting infection associated with a joint prosthesis implant. An inventive system includes an implant body made of a biocompatible material which has a metal component disposed on an external surface of the implant body. A current is allowed to flow to the metal component, stimulating release of metal ions toxic to microbes, such as bacteria, protozoa, fungi, and viruses. One detailed system is completely surgically implantable in the patient such that no part of the system is external to the patient while the system is in use. In addition, externally controlled devices are provided which allow for modulation of implanted components.

A prosthetic implant includes an anterior surface, configured for at least partial contact with an underside of a patient's facial soft tissue. A posterior surface is oppositely placed to the anterior surface. The posterior surface is configured for at least partial contact with a patient's facial bony tissue when the anterior surface is in at least partial contact with the patient's facial soft tissue. An implant body is defined by the anterior and posterior surfaces and extends transversely therebetween. A selected portion of the posterior surface has a texture that mechanically differs from a texture of a majority of the anterior surface.

A device for attaching soft tissue to a prosthetic implant. The device includes a body that includes a frame and a porous section disposed within the frame, wherein the porous section permits the passage of body fluids therethrough to encourage the healing of the soft tissue as well as the growth of soft tissue into and through the porous section.