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What is an Oxford knee replacement?

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The Oxford knee replacement is a partial knee implant used to replace the medial side of the knee, explains Zimmer Biomet, the manufacturer of the device. An Oxford knee prosthetic is smaller than a total knee implant. It offers greater flexibility, removes 75 percent less bone and cartilage, and speeds recovery time with less pain.

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Full Answer

The Oxford implant is designed for people with osteoarthritis, which usually begins in the inside part of the joint, says Zimmer Biomet. In knees with limited damage, a partial replacement preserves the healthy ligaments, bone and cartilage, which can delay or even prevent the replacement of the entire knee. The Oxford device includes a bearing that mimics the action of the meniscus, which is the tissue in a healthy knee that works like a shock absorber.

The Oxford implant is available with a customized system that allows the device to be tailored to the individual, using positioning guides created with magnetic resonance imaging, according to the company. This gives surgeons greater detail and precision when positioning the implant. The Oxford knee can be installed using minimally invasive surgery.

The Oxford prosthetic is highly durable, and data from long-term studies show a 91 percent survival rate after 20 years, notes Zimmer Bionet. There are a number of variables that determine the long-term success of an implant, and only a surgeon can decide if someone is a potential recipient.

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