| AAOS | American Academy of Orthopedic Surgeons |
|---|---|
| AOA | American Osteopathic Association; Administration on Aging; Alpha Omega Alpha Honor Society; American... |
| AOR | Alvarado Orthopedic Research [instruments]; auditory oculogyric reflex |
| AOSSM | American Orthopedic Society for Sports Medicine |
| OE | on examination; order entry [system]; orofacial cleft; orthopedic examination; otitis externa; out-s... |