While researching options for micro-fracture surgery as a treatment option for a cartilage defect, I came across a treatment option based on micro-fracture plus a gel (GelrinC) that is supposed to promote cartilage regeneration . It looks interesting but is still under clinical investigation. Given the poor outcomes of micro-fracture in the long-term is something like this worth looking into? Does anyone know about this treatment? what are the pros and cons?