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Military Health System

Four surgeons in gowns, caps, and masks perform knee surgery.

U.S. Air Force Lt. Col. Jacob Riis, center, an orthopedic surgeon assigned to 355th Medical Group at Davis-Monthan Air Force Base, Tucson, Arizona,, performs surgery on a local Guatemalan citizen's knee while deployed in support of Health Engagements Assistance Response Team 2022, (HEART 22), on Aug. 30, 2022, at Hospital Regional de Occidente in Quetzaltenango, Guatemala. During HEART 22, the U.S. military and partner nation medical professionals operated side-by-side in three specialties: Ophthalmology (general and cornea transplant surgeries), Orthopedic (general and trauma surgeries) and Dental (restorative dental surgeries). (U.S. Army photo by Staff Sgt. Dustin Biven/Defense Media Activity)

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Last Updated: November 03, 2022
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