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What Is Joint Function?

By , About.com Guide

Updated January 29, 2010

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Question: What Is Joint Function?
It comes up a lot in study results. Researchers speak of joint function and how it is affected by diseases, such as arthritis, or treatments for arthritis. What is joint function?
Answer:

A joint is defined as the juncture where two or more bones come together for the purpose of movement. Contraction of muscles crossing the joint cause it to move. So, normal joint function is defined as a joint's ability to move throughout its range of motion, bear weight and perform work.

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