A look into the surgery room makes you think you are on the moon. The doctors look like astronauts. The surgeons use ventilated helmets, which have the advantage over the usual breathing masks and visors encompassing the entire head. An integrated ventilator with sterile air does not only protect the surgical team from contamination by aerosols and particles generating during orthopedic surgeries and settling on the mucous membranes, but it also reduces the risk of wound infections. Doctors use the surgical helmets with hermetic sealing of breathing air and ventilation through a ventilation system as standard in all joint surgeries. Scientific studies have shown that modern space helmets further improve hygiene at the surgical site—an advantage for both the patient and the surgeon.