What metals are in a knee replacement?

What is the best material for a knee replacement?

Typically made from cobalt-chromium as this material is scratch resistant and safe for use in total knee replacements. The majority of total knee femoral components are made out of cobalt-chromium with excellent long-term success rates.

What type of material is used in total knee replacement?

Implants are made of metal alloys, ceramic material, and strong plastic parts. Up to three bone surfaces may be replaced in a total knee replacement: The lower end of the femur. The metal femoral component curves around the end of the femur (thighbone).

Can you be allergic to the metal in a knee replacement?

The most common metal allergy is nickel, which is found in very small quantities in knee implants and in some hip implants. While up to 14% of people will have some reaction to certain metal allergy tests, metal allergy is a very rare cause of failure in knee replacements.

Do knee replacements have nickel in them?

The most common metal ions found in knee replacement implants that can cause hypersensitivity include nickel, cobalt, and chromium. These metals are known to cause skin sensitivity in the general public; about 15 percent of people have nickel sensitivity.

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What is the latest technology in knee replacements?

This latest advancement in joint replacement surgery transforms the way knee replacements are performed. “The Mako system is a revolutionary tool to help joint surgeons be more precise in placing implants to achieve the most appropriate, balanced position possible,” explained orthopedic surgeon Harold Cates, MD.

How long do titanium knee replacements last?

In 85% to 90% of people who have a total knee replacement, the knee implants used will last about 15 to 20 years. This means that some patients who have a knee replacement at a younger age may eventually need a second operation to clean the bone surfaces and refixate the implants.

Do titanium knee replacements contain cobalt?

Orthopedic grades of stainless steel and cobalt-chromium alloys both contain these materials, while titanium and titanium alloys do not. The femoral and tibial components of Conformis knee implants are composed of Cobalt Chrome Molybdenum Alloy (Co-Cr-Mo).

What muscles are cut during total knee replacement?

Traditional total knee replacement entails cutting into the quadriceps tendon, which connects the large quadriceps muscle group on the front of the thigh to the kneecap. The surgeon then moves the kneecap out of the way to access the arthritic joint.

Are there non metal knee replacements?

The metal-free BPK-S ceramic total knee replacement system proved to be a safe and clinically efficient alternative to metal implants in this short-term follow-up study.

Does surgical titanium contain nickel?

Look for jewelry made from such metals as nickel-free stainless steel, surgical-grade stainless steel, titanium, 18-karat yellow gold, or nickel-free yellow gold and sterling silver. Surgical-grade stainless steel may contain some nickel, but it’s generally considered hypoallergenic for most people.

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What happens if your body rejects your knee replacement?

The most common symptoms of a failed knee implant are pain, decrease in joint function, knee instability, and swelling or stiffness in the knee joint.

Is your immune system compromised after knee replacement surgery?

Everyone who has a knee replaced is at risk for a deep infection. Most infections occur in the first two years after surgery. This is when 60 to 70 percent of prosthetic joint infections occur. That said, infections can develop at any time after surgery.