What is the Mako Knee Replacement Made Of?
The Mako robotic-arm assisted knee replacement system itself isn't a prosthetic knee. Instead, it's a sophisticated surgical tool used to implant a knee replacement. Understanding this distinction is crucial. The Mako system helps surgeons precisely place the prosthetic components, leading to a potentially better fit and outcome. Let's break down the materials used in both the Mako system and the actual knee implants it helps install:
What is the Mako Robotic Arm Made Of?
The Mako system's robotic arm is a complex piece of medical technology. Its precise construction uses a variety of materials, including:
- High-strength metals: These provide the structural integrity needed for the robotic arm's movements and stability. The specific alloys used are proprietary information to the manufacturer, Stryker.
- Advanced plastics and polymers: These are likely used in components requiring flexibility, insulation, or precision movements. Again, the exact types are not publicly available.
- Sensors and microprocessors: These are integrated to provide the robotic arm with precise control and feedback during the surgery.
It's important to note that the Mako robotic arm itself isn't implanted in the patient. It's a tool used by the surgeon.
What are the Knee Implants Used in Mako Surgery Made Of?
The actual prosthetic knee components implanted during a Mako-assisted procedure are made of materials designed for biocompatibility and durability within the body. These typically include:
- Metal alloys: Cobalt-chromium alloys are common choices due to their strength, resistance to wear, and biocompatibility. Titanium alloys are also sometimes used, offering a lighter weight option. These alloys form the femoral (thigh bone) and tibial (shin bone) components of the prosthetic knee.
- Polyethylene: This high-molecular-weight plastic forms the bearing surface that articulates with the metal components. It's chosen for its low friction and wear resistance. Modern polyethylene often incorporates advancements to improve its longevity and reduce wear particle generation.
- Ceramics: In some designs, ceramic components might be used for either the femoral or tibial components, or even both. Ceramic offers excellent wear resistance but can be more brittle than metal.
The specific materials and their exact composition will vary depending on the type of knee implant used by the surgeon. The Mako system is compatible with a range of different implant designs from Stryker and other manufacturers.
What are the differences between implants used in Mako vs. traditional knee replacement?
The implants themselves aren't inherently different between a Mako-assisted and a traditional knee replacement. The key difference lies in how the implants are positioned and secured. Mako uses pre-operative imaging and intra-operative robotic guidance to enhance the precision of implant placement, potentially leading to better alignment, joint mechanics, and long-term outcomes.
Are there any allergies to consider regarding the materials?
Patients should discuss any potential allergies or sensitivities to metals or plastics with their surgeon before the procedure. This is standard practice for any surgical procedure involving implants.
How long do Mako knee replacements last?
The longevity of a Mako knee replacement (or any knee replacement) depends on various factors, including patient activity levels, weight, bone health, and the quality of the surgical technique. While the Mako system aims to improve surgical precision and potentially extend the life of the implant, it doesn't guarantee a specific lifespan. Most modern knee replacements can last for 15-20 years or longer.
This information is for general knowledge and should not be considered medical advice. Always consult with a qualified healthcare professional for any questions about specific medical conditions or procedures.
