1. An apparatus for forming a cartilage implant, comprising: a pliable metal foil substrate shapeable to substantially conform to one or more contours of a cartilage defect and having a releasable surface, the one or more contours forming a substrate cavity at least partially surrounded by the releasable surface; and a biocompatible carrier disposed in the substrate cavity and having an outer portion in contact with the releasable surface, the carrier comprising human juvenile cartilage particles including viable chondrocytes for combining with the biocompatible carrier, the biocompatible carrier, when cured, removable from the substrate and defining a size and shape complementing a size and shape of the substrate cavity.