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The Medical Tourism on knee and joint related treatments are are increasing in Tamilnadu. You might pleased to get to know about Knee Replacement thoroughly through the below article. All the credits to www.medicalonline.in 

Total knee replace-ment has seen a wide spectrum of implants over the past few decades catering to a multitude of function requirements and simulating the complex anatomy of the knee.

Ceramic coated knee (OXINIUM TM) ) is a revolutionary new alloy that provides improved wear charac-teristics in knee replacement and could last twice as long as standard devices British company Smith & Nephew developed this industry defining metallic alloy in response to the orthopaedic quest for implants with less wear and tear. After 11 years of development and bio-mechanical testing, to meet regula-tory guidelines and quality control measures, the Oxinium knee impla-nts are now available to patients in India. This means that millions of people who suffer with arthritis can now benefit from the new Ceramic coated  knee, which could last their lifetime. It also means that younger patients who have suffered severe pain and immobility while waiting years to be offered a knee replace-ment, may no longer have to.

While conventional total knee replacements have been a part of orthopaedics for the past 50 years, it has its limitation in India in parti-cular due to the socio-cultural demands like sitting cross-legged on the floor. High wear rate of the polyethylene surface reduces the life of the implant leading to revision of knee replacements. The oxinium knee, by its design and chemical nature is suitable for these patients.

What is OXINIUM ?

Oxidized Zirconium is a metal alloy consisting of 97.5% zirconium and 2.5% niobium, two of the most bio-compatible metals known to man. Oxinium material is a unique and advanced bearing product techno-logy created through manufacturing process that transforms the surface to a ceramic through a process that involves extreme heat and oxygena-tion. The ceramic is an enhanced sur-face that is part of the metal substrate rather than an external coating, making it very durable with unusual damage tolerance. This results in a material that incorporates the best features of ceramic and metal.  It has the strength and toughness of a metal prosthesis like cobalt chrome but showing the wear characteristics of a ceramic.

Durability: The significant advan-tage of an Oxinium knee implant is that it is considerably harder. The forces generated as a knee or hip goes through its range of motion require a strong material that can withstand repeated sliding and rotating. High fatigue strength and toughness are needed. Its high surface hardness minimizes abrasive scratching, This scratch resistance makes the oxi-nium implant durable and is suitable for patients less than 60 years of age.

Wear resistance

The leading problem confronting orthopaedic surgeons and manufac-turers is the generation of wear debris, particularly polyethylene wear. The total knee implant can roughen over time when placed in the body.

In the knee when the femoral compo-nent rubs over the plastic (polye-thylene) insert, the plastic surface can start to wear out or break up. The rougher the femoral surface the worse the amount of wear. These plastic wear particles or 'debris' can be responsible for the failure of the whole knee replacement not only due to the thinning of the plastic insert itself but also due to the body's reaction to the microscopic particles which can cause loosening and thinning of bone at the implant interface. The improved wear per-formance of Oxidized Zirconium is partly due to the ionic character of it's ceramic surface that enhances wetability. Surfaces that attract more lubricating fluid and remain smooth tend to result in less friction. Due to this characteristic of the ceramic coating of the oxinium knee there is much lower potential for adhesive wear.  With this material's resistance to abrasion and anticipated longe-vity, patients under the age of 60 can once again enjoy an active lifestyle.

Biocompatibility OXINIUM

Oxidized Zirconium is the best choice in joint replacement materials for patients who exhibit metal aller-gies. OXINIUM imp-lants contain no detec-table nickel, the main cause of negative reac-tions in patients with metal allergies.  Zirco-nium is one of the most biocompatible metals known to man; there-fore, patients with metal allergies espe-cially to nickel are able to tolerate this new implant.  

Orthopaedic surgeons outside India have been using ceramic coated knee implants for over 5 years with great success. Oxinium is a superior implant that is expected to last longer and will allow active, younger patients to benefit much earlier from a replacement knee. This in turn will reduce the amount of suffering a patient often experie-nces due to a painful knee.

Patients, who desire to return to an active lifestyle, including sports, dancing, gardening and other activities, may also benefit from an Oxinium knee replacement. With the expected longevity of the implant ceramic coated knee implants are expected to outlive the patient! Since the oxinium implant has recently been available in India, it is a boon for younger arthritic patients who need a knee replacement.

For more information contact: +91 9840032251

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