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atrau·mat·ic | \ (ˈ)ā-trə-ˈmat-ik, trȯ-, trau̇- 
\
\Medical Definition of atraumatic
1 : designed to minimize tissue damage : not causing injury or trauma
atraumatic sutures atraumatic grasping forceps The ultrasonic aspirator, which combines a vibrating head with suction to remove tissue, has made atraumatic removal of tumors from cranial nerves and important cortical areas possible.— Peter M. Black, The New England Journal of Medicine, 23 May 1991
2 : not resulting from injury or trauma
Based on her very low bone mass measurements, history of atraumatic fractures, and multiple other risk factors, she is at great risk for future fractures.— Susan L. Greenspan, The Journal of the American Medical Association, 28 Apr. 1999 But these tears can occur without an acute injury, and we have found such atraumatic rotator cuff injuries increase … with advancing age … — Riley J. Williams, in Food & Fitness Advisor, July 2005
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