The surgery will create small holes in the bone at the base of the articular cartilage to allow blood to form clots with bone marrow elements that will produce a new cartilage surface.

• 手术将会在他的关节软骨下部的骨头上开一些小孔，这样血液将与骨髓组织一起凝固来形成一个新的软骨表面。