Effects of Aging - OrthoInfo - AAOS cartilage changes Acute injuries Effects of Aging changes with age aaos.org Effects of Aging Effects of Aging American Academy of Orthopaedic Surgeons http://orthoinfo.aaos.org/topic.cfm?topic=A00191 American Academy of Orthopaedic Surgeons Effects of Aging http://orthoinfo.aaos.org/topic.cfm?topic=A00191 http://orthoinfo.aaos.org/topic.cfm?topic=A00191 American Academy of Orthopaedic Surgeons