Instruments for reproducible setting of defects in cartilage and harvesting of osteochondral plugs for standardisation of preclinical tests for articular cartilage regeneration - Schwarz, Markus; Schneider-Wald, Barbara Katharina; Brade, Joachim; Schleich, Dieter; Schütte, Andy; Reisig, Gregor (Journal of orthopaedic surgery and research, 2015)