Clinical study of Chinese herbal medicine warming method in the postoperative pain relief after knee arthroscopy Objective To verify the clinical efficacy of the warming method in the early pain relief after knee arthroscopy Methods Seventy-eight patients were enrolled after knee arthroscopy, and were divided into 44 cases in the treatment group and 34 cases in the control group by randomized double-blind method for clinical observation. Results The CR+PR rates were 84.1% and 47.1% in the treatment group and control group, respectively, with significant differences at P<0.05. Conclusion Chinese herbal medicine Wenli method is a feasible treatment method to relieve pain after knee arthroscopy Knee arthroscopy is a minimally invasive treatment method for knee disorders, which has the characteristics of small trauma, short treatment course and good effect, but because the corresponding synovial membrane, ligament and cartilage have to be treated during the operation, it is usually accompanied by joint swelling and pain in the early postoperative period, which prevents functional recovery and affects the efficacy. From 2006 to 2007, 78 cases of postoperative knee arthroscopy patients were treated and observed by using the Wenli method of traditional Chinese medicine, and the results are reported as follows 78 patients with postoperative pain were randomly divided into 44 cases in the treatment group and 34 cases in the control group, with an average age of 45-65 years, a maximum duration of 4 years and a minimum duration of 3 months, and no significant difference between the two groups by ANOVA before treatment. After resuming normal diet 8 hours after surgery, one dose of the decoction was taken daily, 300 ml of the decoction was taken in the morning and 300 ml in the evening, 7 days was considered as a course of treatment, two consecutive courses of treatment. The pain relief efficacy criteria are as follows: (1) complete relief (CR) means the pain disappears; (2) partial relief (PR) the pain is significantly reduced, does not affect sleep, and does not require painkillers; (3) mild relief (MR) the pain is reduced, but still obviously requires painkiller treatment; (4) ineffective (NR) the pain is not reduced or worsened after treatment. The total healing rate = CR + PR, the total effective rate of pain relief was compared between the two groups by chi-square test, the number of effective days of pain relief was expressed as mean + standard deviation (X + S), and the statistical comparison was done by t-test. This technique not only removes disease-causing tissue and inflammatory mediators from the joint, but also corrects the worn joint surface, corrects the meniscus, and releases adhesions [2]. Since instruments (blue forceps, planer) are used to treat the corresponding synovial membrane, cartilage, and ligaments during the surgical procedure, this inevitably causes painful swelling of the joint in the short postoperative period. This delays the early functional exercise after surgery. Chinese medicine believes that both internal and external injuries are injured by qi and blood, qi is the handsome of blood, blood is its mother, qi moves blood, qi stagnation leads to blood stasis, stasis is not passable, not passable is pain, Chen Shiduo proposed that stagnant blood does not go, new blood is not born, pointing out the main method of moving qi, activating blood and dispersing stasis treatment. The Chinese medicine theory is that pungent can disperse, can move, warm can pass the qi and blood, tendons and joints can be moistened to stop pain and remove paralysis. For example, cinnamon can benefit the joints, produce muscles and renew the tendons and bones. Dried ginger can pass through the joints of the limbs. Modern medicine has given it a new connotation, modern pharmacological research has confirmed that the warming agents, such as eucommia, cinnamon, ginger, clove, pepper and dogwood, have analgesic, anti-inflammatory effects and antipyretic and anti-metabolic effects. Most are produced by inhibiting the metabolic mechanism of arachidonic acid (AA), and some also act by promoting the release of corticosteroids. Clove and pepper also produce warming and analgesic effects through local anesthetic action [3]. We emphasize the warming and pain-relieving function of warming herbs and give it a modern connotation, which provides a scientific basis for the clinical use of warming herbs in the treatment of postoperative pain.