By Mayo Clinic News Network

A knee brace for osteoarthritis may help reduce pain by shifting your weight off the most damaged portion of your knee. This may improve your ability to get around and help increase the distance you can walk comfortably.

Knee braces come in a variety of designs, but most are constructed with a combination of rigid and flexible materials -- plastic, metal or other composite material for basic structure and support, and synthetic rubber or moldable foam for padding and positioning.

Source: http://www.mayoclinic.com/health/knee-braces/MY00137