Closed lavage and negative pressure drainage

Osteoarthritis suppurative infection is the important principle of surgery while thoroughly applying effective antibiotics throughout the body, thoroughly removing the lesions and fully draining. Closed lavage and negative pressure drainage are performed after the lesion is cleared, and the double tube is placed into the wound. The incision is completely closed. An effective antibiotic solution with a certain concentration is used for continuous lavage and drainage. It is applied to patients with indications. This method has the following advantages: ① Continuous lavage can effectively dilute the pus and cause the necrotic tissue to fall off. It can be smoothly discharged through negative pressure drainage, keep the wound clean, inhibit the bacterial allergy, form a sterile environment, and use granulation growth. And wound healing; ② reduce intra-articular adhesion; ③ the wound is completely closed to prevent secondary infection and can achieve primary healing; ④ is conducive to postoperative functional recovery. The clinical application is wide, not only can be used as adjuvant therapy, and some can be used as the main treatment method, so it is described in a single section.