(medicine) A treatment that does not include any operation or intervention.
2000, G. Puddu et al., "Achilles Tendon Injuries" in The Encyclopaedia of Sports Medicine, ISBN0632037857, page 200:
Operative treatment should be reserved for those patients in whom conservative treatment has failed and who are motivated with regard to sports.
2006, J. Franke, "Intramedullary Nailing of Humeral Shaft Fractures" in Practice of Intramedullary Locked Nails: New Developments in Techniques and Applications, ISBN3540253491, page 179:
For the treatment of humeral shaft fractures, conservative treatment still competes with the operative approach to a much greater degree than is the case for fractures of the long bones of the lower extremity.
2007, Thomas E. Hyde and Marianne S. Gengenbach, Conservative Management of Sports Injuries, ISBN0763732524, page 597:
Conservative treatment could also include short-arm casting with the fingers and thumb free for 2-6 weeks.