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. 2017 Apr 20;18:165. doi: 10.1186/s12891-017-1468-6

Fig. 2.

Fig. 2

Forest plot for the development of osteonecrosis of any grade at two or more years following open or closed reduction. Including the data of 11 studies, 1,021 hips were analyzed. There was no statistically significant association between the ossific nucleus and the development of osteonecrosis