Commentary

When our ancestors first stood upright, they didn’t just change how they moved. They rewired the very blueprint of their skeletons. Among the most radical changes was the pelvis—an anchor point for muscle, balance, and birth. For decades, anthropologists...

The upper part of the human pelvis, the ilium, underwent two major structural changes during evolution that enabled humans to walk on two legs. One was the formation of cartilage and the second was the process of bone formation. New research identifies...