CLAUS LUNAU / SCIENCE PHOTO LIBRARY CLAUS LUNAU / SCIENCE PHOTO LIBRARY
Damaged knee ligament. Computer artwork of the muscle structure of the leg and anatomy of the human knee joint, showing a tear (dark line, centre right) in one of the cruciate ligaments (beige). Ligaments are bands of inelastic fibrous tissue that connect bones to other bones. Those in the knee are the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL).
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