Using Diamonds to Improve Traditional Orthopedic Implants

Researchers at the University of Alabama at Birmingham have found that nanodiamond coating limits wear and tear on the body's joints.

KneesMedPost.jpg

Metal-on-metal implants have been making headlines in publications such as The New York Times as a result of adverse events associated with them, which include bone and tissue damage. The debris produced by the implants is frequently linked to such problems.

Researchers at the University of Alabama at Birmingham are working to limit such wear by investigating the use of nanodiamond coatings on metal implants. In an early study published in the journal Acta Biomaterialia, the researchers found that the "[n]anostructured diamond coatings improve smoothness and wear characteristics of the metallic component of total hip replacements and increase their longevity."

The scientists also observed some degree of debris from the nanodiamond coatings and noted the need for future studies to determine its effect on the body. Nevertheless, the researchers expect that the debris from the nanodiamonds to be well tolerated by the body. As the announcement explains:

Based on the way nanodiamonds interact with macrophages in a dish, the study authors suggest that the usual size and concentration of wear debris should cause neither inflammation nor toxicity. The macrophages that engulf smaller nanodiamonds release fewer inflammatory chemicals than those encountering larger particles shed by the metal and polymer surfaces of conventional implants.

"Our results add to the early evidence that nanodiamonds are indeed nontoxic in living cells," said Vinoy Thomas, Ph.D., research associate in the Department of Physics within the UAB College of Arts & Sciences, and corresponding author of the study. "The next step will be to conduct experiments to confirm where nanodiamond particles of varying sizes and concentrations end up, and if buildup at those destinations is safe.


This post also appears on medGadget, an Atlantic partner site.

Presented by

medGadget is written by a group of MDs and biomedical engineers.

Never Tell People How Old They Look

Age discrimination affects us all. Who cares about youth? James Hamblin turns to his colleague Jeffrey Goldberg for advice.

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register.

blog comments powered by Disqus

Video

Never Tell People How Old They Look

Age discrimination affects us all. James Hamblin turns to a colleague for advice.

Video

Would You Live in a Treehouse?

A treehouse can be an ideal office space, vacation rental, and way of reconnecting with your youth.

Video

Pittsburgh: 'Better Than You Thought'

How Steel City became a bikeable, walkable paradise

Video

A Four-Dimensional Tour of Boston

In this groundbreaking video, time moves at multiple speeds within a single frame.

Video

Who Made Pop Music So Repetitive? You Did.

If pop music is too homogenous, that's because listeners want it that way.

More in Health

Just In