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. Author manuscript; available in PMC: 2014 Apr 24.
Published in final edited form as: J Knee Surg. 2011 Dec;24(4):217–224. doi: 10.1055/s-0031-1297362

Figure 2.

Figure 2

This is a Grade 4b lesion in a medial femoral condyle after direct trauma. This patient was involved in an MVA 3 months prior to this image and had a penetrating trauma to the knee.