title: An AOA critical issue: aging of the North American population: new challenges for orthopaedics.
authors.affiliation: Department of othopaedic Surgery, University of Iowa Hospitals, Iowa City 52242, USA. joseph-buckwalter@uiowa.edu
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Buckwalter
authors.forename: James D
authors.initials: JD
authors.lastname: Heckman
authors.forename: David P
authors.initials: DP
authors.lastname: Petrie
mesh_terms: D000368:Aged; D000375:Aging / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D009140:Musculoskeletal Diseases / Q000503:physiopathology*; D009142:Musculoskeletal Physiological Phenomena; D009656:North America; D009985:Orthopedics / Q000639:trends