Doctors have discovered a new ligament in the human knee.
It's amazing that we are continuing to learn new things about the human body every day, even about parts that were thought to be pretty well understood such as the knee. To me, it highlights the complexity of the body and is also a good reminder to be humble about what we know in medicine. If a completely new ligament could be "found" in something so commonplace and prosaic like the knee, I wonder what other things we don't know about the human body that we will find out in the years ahead?
New York Times article reporting this discovery