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However, few studies reported the changes in hip articular cartilage after the intervention. This study aimed to investigate the effect of ESWT on femoral head cartilage using a novel technique, quantitative T2\u2010mapping magnetic resonance imaging. <jats:italic>Methods<\/jats:italic>. A total of 143 eligible patients with unilateral early\u2010stage ONFH were randomized into the ESWT group and control group. Seventy\u2010three patients in the ESWT group received two sessions of ESWT with oral drug treatment, while seventy patients in the control group received oral drug treatment only. The visual analog pain scale (VAS) and Harris hip score (HHS) at 3\u2010month, 6\u2010month, and 12\u2010month follow\u2010up were used as the clinical evaluation index. The radiological evaluation index used the T2 mapping values, necrotic size, and China\u2010Japan Friendship Hospital (CJFH) classification. <jats:italic>Results.<\/jats:italic> A total of 143 patients (62 females and 81 males) were finally included, and the characteristics before treatment were comparable between the two groups. At the last follow\u2010up (12 months), the T2 values and \u0394T2 changes in the ESWT group were all smaller than those in the control group (<jats:italic>p<\/jats:italic> = 0.042; <jats:italic>p<\/jats:italic> = 0.039), while the CJFH classification of ONFH and necrotic lesion size were not statistically significant. At 3 months and 6 months, the VAS in the ESWT group was lower than that in the control group (<jats:italic>p<\/jats:italic> = 0.021; <jats:italic>p<\/jats:italic> = 0.046) and the HHS in the ESWT group was higher (<jats:italic>p<\/jats:italic> = 0.028; <jats:italic>p<\/jats:italic> = 0.039). However, there were no significant differences in the VAS and HHS at 12 months between the ESWT and control groups. <jats:italic>Conclusions.<\/jats:italic> The results of the current study indicated that, based on drug treatment, ESWT is an effective treatment method for nontraumatic ONFH, which could result in significant pain relief and function restoration. Furthermore, it could delay the injury of femoral head cartilage during the progression of ONFH.<\/jats:p>","DOI":"10.1155\/2022\/8609868","type":"journal-article","created":{"date-parts":[[2022,6,13]],"date-time":"2022-06-13T13:36:16Z","timestamp":1655127376000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Quantitative Magnetic Resonance Imaging of Femoral Head Articular Cartilage Change in Patients with Hip Osteonecrosis Treated with Extracorporeal Shock Wave 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