Dr. Paul Burroughs of the Bone & Joint Surgery Clinic of Raleigh, NC discusses partial knee replacement.
Many patients with arthritis in the knee have damage that is localized to a single area of the knee. Instead of replacing the entire knee, they elect to proceed with a more conservative surgery that is less invasive, and addresses only the damaged area, leaving the rest of the knee untouched. There are a number of different manufacturers of partial knee replacement implants. Dr. Paul Burroughs prefers The Oxford® Partial Knee implant from Biomet Orthopedics. This implant designed to repair only one side of the knee (the medial side), making it much smaller than a total knee implant.
In patients with only limited knee arthritis, known as medial compartment arthritis, surgeons may elect to perform a partial knee replacement. Unlike total knee replacement that removes all the knee joint surfaces, a partial knee replacement replaces only one side of the knee joint. Some advantages of the Oxford® partial knee replacement are that it removes 75% less bone and cartilage, is less painful, enables a more rapid recovery, and provides more natural motion when compared to a total knee replacement.
By retaining all of the undamaged parts, the joint may bend and function more naturally. Knee osteoarthritis usually occurs first in the medial (inside) portion of the joint. In knees that are otherwise healthy, a partial knee implant procedure can preserve the healthy bone, cartilage, and ligaments, potentially preventing or delaying the need for total knee replacement.
The Only One of Its Kind
Unlike other implants, the Oxford® Partial knee is currently the only fully mobile bearing partial knee system available in the United States. Research has shown that partial knee replacements with moveable plastic bearings like the Oxford® Partial knee have low wear rates, potentially giving them even longer life expectanciesThe free floating nature of the device potentially provides for a more natural feeling knee.
More Natural Motion
In a healthy knee, the meniscus serves as a shock absorber between the ends of the bones. The Oxford® Partial knee is the first partial implant with an artificial meniscal bearing designed to glide freely throughout the knee’s range of motion, more closely replicating normal movement. The free floating nature of the device potentially provides for a more natural feeling knee.
Published long-term clinical results on the Oxford® Knee demonstrated a 98% success rate at 10 years and 95% at 15 years and beyond, equaling the results of the most successful total knee replacements. Not all patients are candidates for Oxford® partial knee replacement. You should discuss your condition and treatment options with your surgeon. Biomet offers the broadest range of partial knee replacements available, providing your surgeon with unparalleled flexibility to address your condition. All provide the option of minimally invasive surgeryot all patients are candidates for partial knee replacement.
The Oxford® Partial Knee is intended for use in individuals with osteoarthritis or avascular necrosis limited to the medial compartment of the knee. Oxford® Knee currently is not indicated for use in the lateral compartment, although research is advancing rapidly on this indication. Potential risks include, but are not limited to, loosening, dislocation, fracture, wear, and infection, any of which can require additional surgery. For additional information on the Oxford® knee, including risks and warnings, talk to Dr. Burroughs or visit http://www.raleighkneedoc.com/Knee_Specialties.html.