A device is provided for retaining an articular cartilage graft within a cavity formed in cartilage. The device is a disk-shaped cap having a peripheral edge formed to be complementary with a wall of the cavity such that with the cap inserted into the cavity, it is secured in position in overlying relationship...http://www.google.es/patents/US6120541?utm_source=gb-gplus-sharePatente US6120541 - Apparatus for use in grafting articular cartilage
