Fig. 4From: Instruments for reproducible setting of defects in cartilage and harvesting of osteochondral plugs for standardisation of preclinical tests for articular cartilage regenerationMeasurement of the defects. a The measurement of the defects was performed with casts made out of dental cement (detail, right) which were taken from the moulds made of alginate, (detail, left) thus representing the original shape of the defects. b The solid cast (arrow) is fixated in a tap holder. Thus, it was possible to take the measurements of the defects indirectly but exactly with a contacting digital gaugeBack to article page