title: I've heard a lot about the "microfracture" technique for the repair of damaged knee cartilage, specifically that it is very effective and lasts a long time. Can you explain the procedure and what its advantages are over conventional methods of knee repair?
mesh_terms: D001182:Arthroscopy / Q000379:methods*; D002358:Cartilage, Articular / Q000293:injuries* / Q000601:surgery*; D006801:Humans; D007719:Knee Joint; D013234:Stem Cells / Q000502:physiology