"The trick is to fabricate a lattice of interconnected hollow tubes with a wall thickness 1,000 times thinner than a human hair," lead author Tobias Shandler of HRL said in the release.

X-RAY-ray inspection using a lead-free solder paste of voids issue, found that the size and diameter welded hollow in acceptable range.

Screw augmented with bone cement or replaced with thicker, longer screws or special screws (hollow screw and expandable screw hole) can lead to increase in the absolute value of screw stability.