There should be strict requirements on the material of the sterile drape (single). In order to prevent the water droplets from getting soaked, the sterile towel (single) should be made of impervious cloth, and when laying the towel (single) on the instrument table, Lay a layer of impervious nylon sheet first.

The purpose of laying a sterile surgical drape (single) is to cover the parts outside the surgical field, creating a necessary sterile environment, so that the surgical gown and gloved surgeons, assistants, and hand-washing nurses can facilitate aseptic operation.

The correct spread of sterile surgical drapes (single) must ensure that the surgical field is fully exposed, and all unsterilized skin must be tightly covered to isolate it from the sterile surgical field, and it must also be passively moved during the operation. During the operation of the limbs and joints, the sterile towel cannot be moved, and the unsterilized skin shall not be exposed.

On the contrary, improperly spreading a sterile towel (single) will easily expose the unsterilized skin during the operation, destroy the aseptic operation and contaminate the wound, cause infection, increase the patient's pain, and make the operation fail. Assistants who have no experience in orthopedic surgery should first learn and gain experience under the guidance of the attending physician.

Except for hand and foot surgery, the sterilization range of the skin should exceed the upper and lower joints of the surgical site in order to prevent the need to extend the incision during the operation or make a contralateral incision if necessary.