Improved Pain Management in Knee Osteoarthritis-related Surgeries

propaganda and education on pain; Preemptive analgesia with celecoxib (200 mg bid) 2 days before surgery

Squeeze to expel blood (tourniquet); Before skin suture, 20 mL 0.5% ropivacaine was given subcutaneously for local infiltration anesthesia;

The intravenous analgesia pump was placed until 48 h after surgery;On the second day after surgery, celecoxib (200 mg bid) was administered orally, and buprenorphine transdermal patch was applied externally until hospital discharge;FNB catheter was placed under the guidance of ultrasound and connected with an analgesic pump, the anesthesia lasted until 48 h after surgery ‡