Yes it was. There were drilling holes in the knee cap hoping that cartilage would grow thru the holes. It was all a failure most of the time.
Then and earlier MACI was developed first in Europe thru Sanofi and then perfected by Vericel in the USA after they purchased the divested technology from Sanofi.
$VCEL MACI is now a booming success in the USA and is officially approved and Commercially available in the UK and Europe.
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