Abstract:Objective To analyze the effect of rhomboid block combined with intraarticular ozone injection and exercise rehabilitation on knee osteoarthritis. Methods From January 2018 to July 2018, one hundred patients with knee osteoarthritis admitted to our hospital were selected as subjects. According to the random number table, patients were divided into control group and observation group, with 50 cases in each group. Patients in the control group were given intraarticular ozone injection and exercise rehabilitation. The patients in the observation group were additionally treated with rhomboid block. Patients were assessed for pain by the Numerical Rating Scale (NRS) before and 6 weeks after treatment, and the severity of knee osteoarthritis was assessed with the Western Ontario and McMaster Universities Arthritis Index (WOMAC). Long-term outcomes were assessed using the Lequesne Algofunctional Indexes (LAI) and the International Knee Documentation Committee (IKDC) before and 12 months after treatment. Results After 6 weeks of treatment, the NRS score and WOMAC score of the two groups were lower than those before treatment, and the NRS score and WOMAC score of the observation group were lower than those of the control group (P < 0.05). After 12 months of follow-up, the LAI score was lower than that before treatment, and the IKDC score was higher than that before treatment (P < 0.05). The LAI score was lower in the observation group than that in the control group, and the IKDC score in the observation group was higher than that in the control group after treatment (P < 0.05). Conclusion Rhomboid block combined with intraarticular ozone injection and exercise rehabilitation shows great efficacy in the treatment of knee osteoarthritis, which can relieve the pain of patients and reduce the severity of knee osteoarthritis. Besides, it also has certain advantages in improving the knee function of patients in the long term.