![](https://fondoscience.com/sites/default/files/styles/figures_tables/public/articles/images/reaca.28171.fs1907031en-figure2.png?itok=RBhb5aM9)
Figure 2. View of the right knee from the anteroexternal port. Chondral lesion in the internal femoral condyle measuring 10 × 20 mm. A: Outerbridge grade III chondral lesion; B: lesion cleared to the subchondral bone and performance of microfractures; C: placement of the type I/III collagen matrix; D: final view with complete covering of the chondral defect.