The hip joint can withstand repeated motion and a fair amount of wear and tear. As the largest ball-and-socket joint in the body, its structure allows for fluid movement. Whenever you use the hip ...

In the paper now describing the femur, alongside the two arm bones, Guy’s team comes to the opposite conclusion. The team contends that more than a dozen features of the femur suggest that ...

Analysis of the femur proved tricky because the bone is missing the joints on each end, and with them key diagnostic features that might have preempted debate about whether the species was bipedal.