This is an X-ray of a spinal fusion. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any ...

Left: This is a cross-section of the spine showing its hollow center and porous wall architecture (scale bar = 1.0 millimeter). Right: This is the outer surface of the spine. Barbs point toward ...