The injured are transported from Poland by plane via the hospital's own transport service, Karolinska tells TT.
The patients are the first non-civilians from the war to be admitted to the hospital.
"We anticipate damage that may occur in modern warfare.
Many soldiers today wear safety vests, so it is mainly a matter of reconstructing extremities and treating severe fractures of the arms and legs ", says Gunnar Sandersjöö, head of Trauma Center Karolinska, in a comment.
Karolinska is one of several receiving hospitals in Europe for the injured from the war in Ukraine.
Since Russia's full - scale invasion of Ukraine on February 24, there has been an internal plan at the hospital to receive war casualties and relieve Ukrainian health care.
According to the hospital, it is the EU that, via the Swedish Agency for Civil Protection and Emergency Planning, has asked the question of receiving the injured.