A study on the correlation between bone marrow edema of the hip and osteonecrosis of the femoral head / 中国矫形外科杂志

ABSTRACT

[Objective]To study the correlation between the severity of bone marrow edema(BME) and the collapse of osteonecrosis of the femoral head(ONFH),to explore the relationship between the severity and the score of Harris,so as to offer the direction for understanding and judging the prognosis of ONFH clinically.[Method]Fifty-eight cases of ONFH patients(94 hips) without collapse,according to the X-Ray and the MRI examination,made a follow-up visit for 16～28 months,an average of 18 months,and made a retrospective study of the correlation between the severity of BME and the collapse,the Harris of ONFH.[Result]The correlation between the BME degree and the collapse of ONFHthe collapse rate was 4.5% in degreeⅠ,11.8% in degreeⅡ 66.7% indegreeⅢ,90% in degree Ⅳ.The correlation between the BME degree and the Harris93.0?5.41 in degree Ⅰ,84.1?5.42 in degree Ⅱ,76.4?4.22 in degreeⅢ,66.3+7.46 in degree Ⅳ.[Conclusion](1)BME is the secondary sign of ONFH;(2)The tendency of collapse could be predicted through the BME;(3)There is a negative correlation between the BME degree and the Harris,namely the larger scope of BME is,the lower the score of Harris is.