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Abstract Objective The purpose of this study is to investigate whether bone marrow edema (BME) is a risk factor for the failure of conservative treatment of SONK.Methods A total of 90 consecutive cases of SONK in our hospital from May 2020 to October 2020 were retrospectively included.Those patients were divided into low BME group and high BME group according to the MRI grading standard of knee BME area at the first visit.The patients received conservative treatment with limited weight-bearing and non-steroidal anti-inflammatory drugs for one year.The patients were followed to confirm if they received surgical treatment due to knee pain.Surgical treatment means the failure of conservative treatment.The failure rate of conservative treatment was compared between low BME group and high BME group.The failure rate of conservative treatment was surgical treatment cases divided total of cases in high or low BME group.Results The failure rate of conservative treatment in high BME group (75%) was significantly higher than that in low BME group(19%).Conclusion Our study found that BME area had an effect on the conservativetreatment of SONK.The failure rate of conservative treatment of SONK patients with the larger BME area is much higher than ones with smaller BME area.
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Corresponding Authors:
Sun Caihong
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