In order to replace a damaged ligament, surgeons create a tunnel in the upper and lower knee bones (femur and tibia), slide the new ACL between those two tunnels and attach it both ends. (emoryhealthsciblog.com)
He was owed $ 108 million through 2020, and the last few years have suggested his knee bone was connected to his thigh bone in all the wrong ways. (sbnation.com)
Open - source scans of the 3.18 million - year - old hominid's arm, shoulder and knee bones are now available to support a hypothesis that Lucy died falling from a tree. (newatlas.com)