9 results about "Tibial insert" patented technology

An orthopaedic surgical instrument system includes a sensor adapter and multiple surgical instruments. The sensor adapter includes a housing with a force sensor positioned within the housing and a sensor contact configured to transfer force to the force sensor extending from the housing. Each surgical instrument includes a sensor connector configured to receive the sensor adapter at a predetermined location relative to the surgical instrument. Each sensor adapter further includes a registering feature to engage an anatomical feature of a patient or another surgical instrument. The surgical instruments may include a shim that may be attached to a gap assessment tool or a tibial insert trial. Methods associated with the surgical instrument system are also disclosed.

An orthopaedic surgical instrument system includes a sensor adapter and multiple surgical instruments. The sensor adapter includes a housing with a force sensor positioned within the housing and a sensor contact configured to transfer force to the force sensor extending from the housing. Each surgical instrument includes a sensor connector configured to receive the sensor adapter at a predetermined location relative to the surgical instrument. Each sensor adapter further includes a registering feature to engage an anatomical feature of a patient or another surgical instrument. The surgical instruments may include a shim that may be attached to a gap assessment tool or a tibial insert trial. Methods associated with the surgical instrument system are also disclosed.

The present apparatus is a tool that holds and positions the tibial insert to improve the process of inserting the insert during a knee replacement operation. The apparatus comprises an arcuate convex shape that receives and holds the insert in place. The apparatus can be attached to a handle to provide greater ease of use, more reliable handling, and easier placement. The apparatus is made to have a pressure fit on the insert to firmly hold it in place, while still allowing it to be pulled off after the insert has been placed.

This invention consists of reproducing the main movements of the natural knee: Flexion / Extension (F / E) and the Anterior / Posterior (A / P) gliding movement under a static load while using servo drives, servo motors, sensors, a linear displacement table based on ball screws, a data acquisition card, a microcomputer, a communication bus and control software. This test bench makes it possible to quantify the friction and wear of a knee prosthesis in order to discover a new material for the tibial insert for the manufacture of knee prostheses allowing for a satisfactory lifespan and postponing the second surgical intervention.

An orthopaedic knee prosthesis (100) includes a tibial insert (104) and a femoral component (102) configured to articulate on the tibial insert. The tibial insert includes a lateral articular surface (122) and medial articular surface (124) that is asymmetrically shaped relative to the lateral articular surface. The medial articular surface is shaped to reduce anterior translation of a medial condyle of the femoral component, while the lateral articular surface is shaped to allow a lateral condyle of the femoral component to pivot, relative to the medial articular surface, along an arcuate articular path (806). Additionally, one or both condyles (112, 114) of the femoral component may include a femoral articular surface (110) having a curved femoral surface section defined by a continuously decreasing radius of curvature.

Disclosed herein are joint implants with sensors. A tibial implant according to the present disclosure can a tibial baseplate configured to contact a tibia, and a tibial insert configured to contact a femoral implant. The tibial insert can include an articular surface configured to contact a corresponding femoral articular surface of the femoral implant, at least one sensor and a battery disposed within a void of the tibial insert, and a detachable case configured to seal an opening of the void. A thickness of the tibial insert between the detachable case and the articular surface of the tibial insert may be 2 mm or more.

A modular knee joint prosthesis is configured to move between an extended position and a flexion position. The modular knee joint prosthesis includes a femoral component that is configured to be mounted to a femur. The femoral component has a first cutout or opening in a central region thereof for receiving a femoral insert. The modular knee joint prosthesis also includes a tibial component that is configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component. The tibial component has a second cutout or opening in a central region thereof for receiving a tibial insert. A kit includes the modular knee joint prosthesis, at least two of the femoral inserts having different geometries, and at least two of the tibial inserts having different geometries.

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes a pair of articular surfaces spaced apart by a post. The femoral component includes a pair of femoral condyles spaced apart by a notch in which a cam is located. During flexion, the cam of the femoral component is configured to contact the post of the tibial insert. The dwell point of the medial articular surface of the tibial insert is located, relative to the contact point between the post and tibial insert, to improve stability of the femoral component.

An orthopaedic knee prosthesis includes a tibial insert (104) that includes a post (150). The post of the tibial insert includes features that facilitate medial pivoting of the femoral component within the range of flexion.