MRI showed that 48.1%(13/27) bone infarction had invasion to near joints combined with hydrarthrosis.
MR I可清楚显示邻近关节面受累侵蚀，占48.1%（13/27），均合并关节积液；
2
At the peak of arthritis, the rats showed tri-legged gait, and severe edema in the tissue, as well as hydrarthrosis with massive leukocytes infiltrating into joint cavity and the tissue around.