Evolution medial pivot

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Today, according to the latest literature, nearly 20% of all patients are unhappy with their total knee replacement due to residual pain, functional issues and early implant failure.
The eMP™ Knee System is designed to answer the limitations of traditional implants by delivering superior flexion stability, anatomic motion, and wear –limiting design characteristics.


Stable Motion.
Normal Function.
Natural Feel.

The Medial-Pivot Knee is uniquely engineered to reproduce a healthy knee’s stability and motion. With a stable, pivoting medial side and a lateral side that rolls forward or backward throughout flexion, the eMP Knee System is designed to feel and function like a natural knee.

High Conformity.
Constant Radius.
Unique Design.

The Medial-Pivot Knee features a highly conforming medial side that results from a constant radius design. Reproducing the natural function and stability of the ACL and PCL, this design is unique from every other less conforming traditional knee system. It gives the Medial-Pivot Knee natural motion, so it feels more like a normal knee.

Better Quad Force.
Better Function.
Postional Awareness.

With a more normal quadriceps force pattern, patients not only enjoy improved functionality but also more natural feeling. By reducing quadriceps avoidance, the highly conforming design of the eMP™ System enhances quadriceps efficiency and reduces problems common in traditional knee replacements. This can actually increase patient proprioception or awareness of the knee’s position, and uniquely create a more normal, natural feeling.

Patient Satisfaction.
Single Radius Design.
Superior Stability.

To achieve postoperative satisfaction, patients want their implant to deliver high functionality and a more natural feeling. The single-radius design of the eMP™ Knee System provides stability through all phases of flexion. AP translation is also decreased to help achieve a more normal feel. This represents a dramatic advance over traditional knee replacements, which have been shown to exhibit anterior-posterior translation that can decrease stability and cause early revisions.

High Conforming Articulations.
Stable Range of Motion.
Fewer Revisions.

It is routine for patients to complain of instability following a traditional knee replacement. Studies also clearly show instability to be the leading cause of early revisions.3-5 By delivering a more secure, highly conforming articulation, the eMP™ Knee System provides the kind of stability throughout the range of motion that patients seek.

Natural Biomechanics.
Anterior-Posterior Stability.
Greater Clinical Functionality.

With a constant radius design, the eMP™ Knee System gives patients a more stable feeling and more normal biomechanics. The constant radius in both the coronal and sagittal planes is uniquely designed to mimic the movement of the natural knee. This is a significant benefit over traditional multi-radius implants, which are typically less stable and fail to deliver the same natural feeling to the patient.

With a constant radius femoral component featuring a highly congruent tibial insert, the eMP™ Knee System also delivers superior stability in mid-flexion and prevents anterior-posterior translation. The simple result is that the eMP™ constant radius knee design has been documented in literature to achieve higher clinical function than competitive multi-radius designs.


Reduce Quadriceps Avoidance.
Prevent Altered Gait.
Achieve Normal Feeling.

On the heels of a knee replacement, patients often suffer from changes to muscle contribution to such extent that it alters their gait. Center-of-mass acceleration can also be affected. To compensate, patients typically lean forward and use their hamstrings over their quads, which produces a common “quadriceps avoidance” gait.7

The innovative design of the eMP™ Knee System delivers a more normal quadriceps force pattern. The result is a positive effect on knee function. It delivers enhanced quadriceps efficiency and reduces the quadriceps avoidance found in traditional knee replacements, so patients can enjoy increased proprioception and more normal feeling.