Normally, a leg crush injury with no wound swelling will not become septic, however, if the wound becomes infected due to improper care, it may become septic. 1. The absence of wound swelling after a leg crush injury indicates that the crush injury is not very serious and the possibility of wound infection is relatively small. There is also basically no possibility of wound suppuration. Wound suppuration is usually characterized by redness, swelling, pain and increased body temperature. 2. Clinically, after the occurrence of wound infection, there is usually a concomitant manifestation of pus. If the treatment and care of the wound is strengthened after the leg pressure wound is injured to avoid wound infection, pus will not appear in general. 2. If the patient’s leg is crushed, conservative treatment can be used. If conservative treatment is used, patients can achieve recovery through reasonable rest and appropriate rehabilitation training. However, if the compression injury is more serious, surgical treatment is required under the guidance of the doctor. If a leg compression injury occurs, it is important to go to the hospital in time and receive relevant treatment.