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PURPOSE: To investigate the effect of electroacupuncture on the rehabilitation of patients after total knee arthroplasty (TKA). MATERIALS AND METHODS: Eighty patients with knee osteoarthritis who underwent total knee arthroplasty randomly divided into two groups, with 40 patients in each group. The control group was treated with traditional rehabilitation methods. In addition to traditional rehabilitation treatment, patients in the experimental group received electroacupuncture after operation, while patients in the control group received fake electroacupuncture. Both groups started electroacupuncture treatment and fake electroacupuncture treatment on the third day after operation for 10 consecutive days Data of patients in both groups were collected before surgery, three days after surgery, two weeks after surgery and one month after surgery, including the visual analogue scale(VAS), Knee Society Score (KSS) and range of motion (ROM). RESULTS: Compared with before treatment, after the treatment cycle, the VAS, KSS and ROM of both groups were significantly improved (p = 0.001, p = 0.001). Compared with the control group, the ROM and KSS of the experimental group were significantly improved at two weeks after surgery and one month after surgery, and the VAS was significantly decreased, with statistical significance (p < 0.05). CONCLUSIONS: Electroacupuncture therapy has a positive effect on the recovery of patients after total knee arthroplasty, which can alleviate the pain after total knee arthroplasty, promote the recovery of knee function, which is worthy of clinical promotion. Electroacupuncture therapy combined with routine rehabilitation therapy can better promote the recovery of the knee after total knee replacement; significantly reduce the pain of the knee joint.Electroacupuncture therapy combined with routine rehabilitation therapy can effectively improve the function of the knee joint and promote the improvement of the joint motion of the knee joint.Electroacupuncture has short treatment time, quick effect, and high patient compliance and is worth applying to support recovery after total knee replacement.