Ornberg Richard L.
Oron Uri
Orschler Erich
Ortho Development Corporation
Ortho Innovations, Inc.
Orthomatrix Inc.
Orthomet, Inc.
Orthometer A/S
Orthopaedic Innovations, Inc.
Orthopaedic Research Institute, Inc.
Orthopaedic Technology B.V.
Orthopedic Source, Inc.
Orthoplant Endioprothetick GmbH
Orthoplant Endoprothetik
Orthoscope Ltd.
Orthovations, Inc.
Orthowaz, Ltd.
orto Maquet GmbH & Co. KG
Osborn, deceased Johannes F.
Oscobal AG