The knee broke and the skin was smeared with hydrogen peroxide for a week. After uncovering the scab, take Iodophor for disinfection and wet compress the Kangfuxin solution. There were yellow things. Some said that it was the Kangfuxin solution that was smeared and fed to the tissue. I don't know whether it was pus or tissue
According to your description, it is suggested that you should not throw away the scab and wait for it to fall off by itself. Apply iodophor solution and medical alcohol for disinfection every day. You can continue to use Kangfuxin solution and take some anti-inflammatory drugs orally every day to avoid further infection.
For local lesions caused by trauma like you, you can go to the drugstore to buy 75% alcohol, disinfect 3 ~ 4 times a day, pay attention to avoid exposure to the sun, avoid spicy and irritating food, don't drink alcohol, wear loose cotton clothes, and keep the wound clean, dry and ventilated.
According to the local tissue of knee joint and the clinical situation of local tissue injury after falling injury, the local wound healing and treatment can be carried out through the methods of local tissue disinfection, anti infection and regular dressing change, so as to promote tissue wound healing and avoid the clinical situation of infection treatment.