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. 2015 Apr 28;10:56. doi: 10.1186/s13018-015-0199-3

Figure 3.

Figure 3

Surgical step 1. Following determination of the borders of the affected softened cartilage overlying osteonecrotic area and femoral head osteoplasty (if necessary due to impingement), a K-wire is passed through the sizing jig, into the center of the predetermined osteonecrotic area, which was debrided by using a power drill, with simultaneous lavage.