ObjectiveTo compare the clinical efficacy among different approaches to arthroscopic debridement for knee gouty arthritis. MethodsSixty patients with knee gouty arthritis were enrolled as objects, and were randomly divided into control group and experiment group, with 30 cases in each group. Both group received surgery under arthroscope. The control group and the experimental group received debridement using common approach and abrasive drilling respectively. The operative duration, Visual Analogue Scale (VAS) score of knee joint, Lysholm joint function score and incidence of complications were compared between the two groups. ResultsAll patients were followed up for more than 6 months.The operative duration was shorter in the experimental group compared to the control group（P＜0.05）. In both groups, the VAS scores in a resting state were lower after treatment compared to the scores before treatment（P＜0.05）. At 1 day and 3 days after treatment, the VAS scores of affected knee were lower in the experimental group compared to the control group（P＜0.05）. There were no significant differences in the VAS scores between the two groups at 7 days, 14 days, 30 days, 90 days and 180 days after treatment（P＞0.05）. In both groups, the Lysholm scores of affected knee joint were lower after treatment compared to the scores before treatment（P＜0.05）. There was no significant difference in the Lysholm score of affected knee joint between the two groups at each time point（P＞0.05）. There was no significant difference in the incident rate of complications between the two groups （P＞0.05）. ConclusionFor treating knee gouty arthritis, auxiliary application of backdrilling technology by abrasive drilling under arthroscope has the advantages of simple manipulation, fast cleaning, fast postoperative recovery and less adverse reaction, and obtains a satisfied efficacy.

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