Abstract: An orthopaedic implant for replacing the surface of a bone, such as in a joint arthroplasty, includes a bone facing surface for mating with the prepared end of the bone. The surface includes a porous coating to promote bone ingrowth. A bioresorbable post extends from the bone facing surface for engagement within a prepared cavity or bore in the bone. The bioresorbable material of the post is selected so that the post will not be substantially resorbed into the existing bone until substantial bone ingrowth has been achieved in the porous coating.

Abstract: An orthopaedic implant for replacing the surface of a bone, such as in a joint arthroplasty, includes a bone facing surface for mating with the prepared end of the bone. The surface includes a porous coating to promote bone ingrowth. A bioresorbable post extends from the bone facing surface for engagement within a prepared cavity or bore in the bone. The bioresorbable material of the post is selected so that the post will not be substantially resorbed into the existing bone until substantial bone ingrowth has been achieved in the porous coating.

Abstract: In a surgical method for resecting a bone during joint arthroplasty, an anchoring structure is fixed to a reference, such as a bone, and an articulating linkage is attached to the anchoring structure. A resection guide is fixed to the articulating linkage and then moved into a desired position and orientation. The articulating linkage is then locked to fix and position and orientation of the resection guide. The bone is then resected. Additional resections can be performed by changing the resection guide, unlocking the articulating linkage, positioning and orienting the resection guide into a different position, locking the articulating linkage and then performing the second resection. Computer navigation trackers can be used to accurately set the position and orientation of the resection guides.

Abstract: An articulating joint for rigidly connecting a first object to a second object for use in orthopedics is provided. The joint includes a body and a first articulating member being selectively one of pivotably connected to and rigidly connected to the body. The first articulating member is connectable to the first object. The joint also includes a second articulating member being selectively one of pivotably connected to and rigidly connected to the body. The second articulating member is connectable to the second object. The first articulating member and second articulating member are adapted for simultaneous locking and unlocking to each other.

Abstract: A device for use in an external fixator for use in trauma surgery for rigidly connecting a first object to a second object is provided. The device includes a body and a first articulating member for connecting the device to the first object. The first articulating member is lockable and un-lockable to the body to selectively provide articulation with and rigid connection to the body. The device further includes a second articulating member for connecting the device to the second object. The second articulating member is lockable and un-lockable to the body to selectively provide articulation with and rigid connection to the body. The body, the first articulating second and the second articulating member are adapted for simultaneous locking and unlocking to each other.

Abstract: A device for use in an instrument for use in preparing bone for receiving an orthopaedic implant for use in orthopaedic surgery for rigidly connecting a first object to a second object is provided. The device includes a body and a first articulating member for connecting the device to the first object. The first articulating member is lockable and un-lockable to the body to selectively provide articulation with and rigid connection to the body. The device further includes a second articulating member for connecting the device to the second object. The second articulating member is lockable and un-lockable to the body to selectively provide articulation with and rigid connection to the body. The body, the first articulating second and the second articulating member are adapted for simultaneous locking and unlocking to each other.

Abstract: A surgical instrument system includes a cutting instrument, an anchoring structure, a guide structure and an articulating linkage. The anchoring structure can be fixed to a reference or benchmark, such as a location on the patient's bone. The articulating linkage connects the anchoring structure to the guide structure and includes a plurality of lockage ball joints arranged in series. Each ball joint provides for freedom of movement about three axes of rotation. The articulating linkage may include other structures allowing for additional rotational and translational degrees of freedom of movement for the guide structure with respect to the reference or benchmark. The system is useful in positioning, aligning and orienting a cutting block in joint arthroplasty, and may be useful in conjunction with computer assisted surgery. The system may also include computer navigation trackers for use in such computer assisted surgery.

Abstract: A bone resection tool for resecting an end of a bone along a surface having a curvature comprises a guide, a cutting tool and a track follower. The guide is configured to be removably attached in a fixed position to the end of the bone. The guide is configured to include a track exhibiting a curvature generally corresponding to the curvature of the surface to be resected in the bone. The cutting tool includes a cutting face. The track follower is configured to couple to the cutting tool and cooperate with the track to facilitate reciprocation of the cutting tool relative to the guide to induce the cutting face to resect the bone along the surface having the curvature.

Abstract: A posterior stabilized mobile bearing knee prosthesis includes a femoral component, a tibial tray, and a bearing. The femoral component is configured to be implanted in a surgically prepared femur, with the tibial tray being configured for implantation in a prepared tibia. The bearing is supported on a platform of the tibial tray and rotates relative to the tray.

Abstract: A knee joint prosthesis includes a femoral component for engaging the femur having an articular surface and a recess within the articular surface, and a tibial component for engaging the tibia with a bore, and a meniscal component comprising a rotation pin configured for rotatable mounting within the bore of the tibial component. The meniscal component also includes a bearing surface for sliding contact with the articular surface of the femoral component and an elongated channel defined amid the bearing surface. A stabilizing post is provided that includes a base slidably mounted with the elongated channel and a spine post projecting from the base through the channel and into the recess when the articular surface is in contact with said bearing surface. The stabilizing post thus slides within the channel when contacted by the interior of the recess in the femoral component.

Abstract: A knee joint prosthesis includes a femoral component for engaging the femur having an articular surface and a recess within the articular surface, and a tibial component for engaging the tibia with a bore, and a meniscal component comprising a rotation pin configured for rotatable mounting within the bore of the tibial component. The meniscal component also includes a bearing surface for sliding contact with the articular surface of the femoral component and an elongated channel defined amid the bearing surface. A stabilizing post is provided that includes a base slidably mounted with the elongated channel and a spine post projecting from the base through the channel and into the recess when the articular surface is in contact with said bearing surface. The stabilizing post thus slides within the channel when contacted by the interior of the recess in the femoral component. In a method of the invention, a plurality of stabilizing posts can be provided for temporary mounting within the channel.

Abstract: A knee joint prosthesis includes a femoral component for engaging the femur having an articular surface and a recess within the articular surface, and a tibial component for engaging the tibia with a bore, and a meniscal component comprising a rotation pin configured for rotatable mounting within the bore of the tibial component. The meniscal component also includes a bearing surface for sliding contact with the articular surface of the femoral component and an elongated channel defined amid the bearing surface. A stabilizing post is provided that includes a base slidably mounted with the elongated channel and a spine post projecting from the base through the channel and into the recess when the articular surface is in contact with said bearing surface. The stabilizing post thus slides within the channel when contacted by the interior of the recess in the femoral component. In a method of the invention, a plurality of stabilizing posts can be provided for temporary mounting within the channel.