Fig. 4.

Case no. 13, a 52-year-old female. Arthroscopic view showing a 4.8 × 3.0 cm cartilage defect in the left medial femoral condyle, classified as Outerbridge grade IV

Case no. 13, a 52-year-old female. Arthroscopic view showing a 4.8 × 3.0 cm cartilage defect in the left medial femoral condyle, classified as Outerbridge grade IV