Treatment of the full-thickness focal chondral lesion: (a) Resection of the unstable chondral tissue is performed in the first instance with either shaver or tissue resection. (b) The unstable edges of the lesion are then resected with a ringed curette, leaving the edge as stable and vertical as possible; also the calcareous layer of the exposed subchondral bone is removed with the curettes. (c) After this procedure, it is recommended to palpate the edges of the lesion to confirm the stability of the remaining tissue as well as to measure the chondral defect in millimetric scale. (d) The microfractures are then made with an arthroscopic awl beginning at the vertex of the lesion. For this purpose, there are awls of different angulation to make the perforations as vertical as possible to the lesion.