Advantages
The ADVANCE® Medial-Pivot Knee was designed to meet the following improvement goals over traditional or competitive knee implants:
Restoration of Normal Knee Function
Simply speaking, the medial-pivot design of Wright's implant allows for replication of normal knee motion: bending, rotating, twisting, and flexing, all while maintaining good stability and range of motion and all accommodated by its unique, patented design.
Patient Preferred
In a survey of patients who experienced total knee surgery on both knees (one with an ADVANCE® Medial-Pivot Knee, the other with a competitive product design), more than 80% of the recipients reported that they liked their ADVANCE® Medial-Pivot Knee better. Nearly 75% of those surveyed said it was easier to rehabilitate the knee that was replaced with an ADVANCE® Medial-Pivot Knee.
| Question | Medial Pivot | Other | No Difference |
|---|---|---|---|
| Which knee was easier to rehabilitate? | 74.2% | 12.9% | 12.9% |
| Which knee do you like better? | 80.6% | 19.4% | 0% |
| Which knee is more stable? | 42% | 16.1% | 41.9% |
| Which knee is easier to bend? | 54.8% | 25.8% | 19.4% |
Low Wearing Surfaces
Another benefit of the ADVANCE® Medial-Pivot Knee design is that it wears much less on the polyethylene surface than other competitive knees. This is a result of its conformity.
More Contact Area
The ADVANCE® Knee System femoral implants were designed to maximize contact area with the polyethylene tibial components. This increases the longevity of the implant by spreading forces over a greater area, thereby reducing contact stresses for a low wear.
Stability
Patients who have had both knees replaced were surveyed. One knee was replaced with an ADVANCE® Medial-Pivot Knee, the other knee was replaced with a competitive product design.
Patients felt that the medial-pivot design provided them a higher degree of stability. Because of its circular shape, which more closely mirrors the shape of the natural knee that it has replaced, the Medial-Pivot implant retains more contact throughout the range of motion, which makes the implant feel more stable as patients step forward; for example, descending a flight of stairs.
Faster Recovery Through Minimally-Invasive Surgery
The ADVANCE® Medial-Pivot Knee was designed with instrumentation that allows it to be used with a surgeon's minimally-invasive technique. This smaller incision, 4-6 inches on average as compared to the 8-12 inches of a traditional surgery, enables the patient to rehabilitate more quickly with less pain and return to his or her active lifestyle more quickly.
Better Range of Motion
In contrast, the curvature of the ADVANCE® Medial-Pivot Knee femoral component is constant, and the tibia cradles the femur throughout the full range of motion. This means your weight is spread out evenly when you bend and straighten your knee and that wear is minimized.
