Q:

How much does an artificial knee weigh?

A:

Quick Answer

An artificial knee weighs between 15 and 20 ounces depending on its size. The artificial knee weighs more than the original bones and tissue, and this difference is noticeable.

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Full Answer

The selection of an implant size depends on the body's size, type and special needs. The implant is made of titanium or cobalt-chromium-based alloys and plastic parts. Any material to be used in the construction of an artificial knee must be biocompatible so that it’s not rejected in the body. Parts meant to replace knee components must be equally strong to support weight-bearing loads and absorb stress without breaking. In their designs, an artificial knee's movable parts should support frictionless motion.

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