A lubricant that doesn’t wash away could ease arthritis pain in knees and shoulders, keep artificial joints working smoothly, and even make contact lenses more comfortable. Biomedical engineers discovered a way to bind the lubricant to a sticky manmade molecule that then essentially locks it in place on the surface of cartilage and eye tissues. “What I like about this concept is that we’re mimicking natural functions that are lost, using synthetic materials,” says Jennifer H. Elisseeff, professor of ophthalmology, biomedical engineering, and materials science at Johns Hopkins University.
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