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Cartilage repair techniques are the current focus of large amounts of research. Many different strategies have been proposed as solutions for cartilage defects. Surgical techniques currently being studied include: * bone marrow stimulation * osteochondral autograft transplantation * osteochondral allograft transplantation * autologous chondrocyte implantation * cell-based (using chondrocytes or stem-cells) or acellular scaffolding Articular cartilage stem cell paste grafting is another technique in use and is undergoing continued investigation. ==Background== Articular cartilage is a connective tissue overlying the ends of bones that provides smooth joint surfaces. Healthy cartilage is essential to the proper functioning of joints within the body. Cartilage is composed of cells embedded in an extracellular matrix of collagen fibers and proteoglycans. It contains no blood vessels therefore its cells are dependent upon diffusion for the supply of oxygen and nutrients. Its intrinsic healing capacity is low. Injury to cartilage can lead to pain and stiffness and is the precursor to the development of osteoarthritis (degenerative joint arthritis). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Articular cartilage stem cell paste grafting」の詳細全文を読む スポンサード リンク
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