16 results about "Tibial insert" patented technology

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes an articular surface, and the femoral component includes a femoral articular surface having decreasing radii of curvature posteriorly. The articular surface of the tibial insert includes an increased anterior lip to improve stability of the femoral component.

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 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.

A tibial insert includes an articular surface and a bottom surface opposite the articular surface. The bottom surface includes one or more bone-conserving features. In some embodiments, the bottom surface may be curved to match a curvature of the articular surface such that a thickness of the tibial insert is relatively constant. In other embodiments, the bottom surface may be relatively planar but include a protrusion extending from a planar base surface to maintain a minimum thickness of the tibial insert. The described features may be incorporated in a uni-compartmental tibial prosthesis, a bi-compartmental tibial prosthesis, or a total knee prosthesis.

This invention is entitled "Orthopedic Prosthetic System for Rotationally Articulated Knee Prostheses". The invention discloses an orthopedic prosthesis comprising a femoral component configured to attach to the distal end of a patient's femur. A tibial support is configured to attach to the proximal end of a patient's tibia. A tibial insert is configured to rotate relative to the tibial support. A modular insert is received in a cavity defined within the tibial insert. The femoral component is rotatably coupled to the body of the modular insert.

Exemplary units, apparatus, systems, methods, and kits relating to modular tibial inserts are provided herein. One such unit may comprise a modular tibial insert unit (10) having: a modular medial insert component (20), the modular medial insert component having a proximal side (28) of the medial component disposed proximally from a distal base side (23) of the medial component, wherein a body (25) of the medial component extends between the proximal side of the medial component and the distal base side of the medial component; a modular lateral insert component (30), the modular lateral insert component having a proximal side (38) of the lateral component disposed proximally from a distal base side (13) of the lateral component, wherein a body (15) of the lateral component extends between the proximal side of the lateral component and the distal base side of the lateral component;wherein the modular tibial insert unit has an assembled configuration and a disassembled configuration, and wherein the modular medial insert component is configured to be fixedly coupled to the modular lateral insert component in the assembled configuration.

Instruments, guides, systems and related methods for total ankle prostheses are disclosed. The instruments, guides, systems and related methods facilitate preparation of a tibia and / or talus of a patient for implantation of a total ankle prosthesis therein. The instruments, guides, systems and related methods also facilitate selection of a particular size of a tibial component, a talus component and / or a tibial insert of the total ankle prosthesis that suits the patient. The instruments, guides, systems and related methods include a tibial trial component, a talar trial component and tibial insert trial component that replicate one or more aspects of the tibial component, the talus component and the tibial insert, respectively, of the total ankle prosthesis. The talar trial component includes an articulation surface that articulates with the tibial insert trial component, and slots that facilitate chamfered resection of the patient's talus for the implantation of the talus component thereon.

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.

A tibial tray with a proximal surface, the proximal surface comprising at least two, in particular exactly two central fixation elements for enabling a connection with a tibial insert as a further part of an artificial knee joint, wherein the at least two central fixation elements are protrusions from the proximal surface in the proximal direction and the at least two central fixation elements are positioned symmetrically and / or parallel to a medial plane of the proximal surface, the medial plane being perpendicular to the proximal surface and intersecting the proximal surface in the middle between two most lateral points of the proximal surface. The invention

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.