Human Chondrocytes from Human Adipose Tissue-Derived Mesenchymal Stem Cells Seeded on a Dermal-Derived Collagen Matrix Sheet: Our Preliminary Results for a Ready to Go Biotechnological Cartilage Graft in Clinical Practice

Figure 1

Structure of human cartilage. The cartilage tissue consists of 4 different substrates: 1, the superficial area, a mélange of synovial fluid, chondrocytes, stem cells, and flat cells; 2, an intermediate zone; 3, the radial zone; and 4, the subchondral calcified area close to the bone.