A design method (2) for design of an individually customized implant (1) according to the invention based on making a 3D computer plan of a virtual model of an implant wherein the design method comprises virtual digital representations of a position of the virtual model of the implant (42) in a virtual 3D view (9) of a joint of a patient, the design method (2) comprising steps； - A first damage identification step (101) comprising identifying a bone and or cartilage area (4) in a patient comprising a bone and or cartilage damage (5) and presentation of a 3D view (9) of said identified area using a software program - A second virtual model making step (14) comprising making a 3D model of a virtual implant (42) comprising a step of virtually placing in said 3D view (9) at least two circular shapes (303), wherein each circular shape (303) partly overlaps at least one other circular shape (303'), and wherein the combined area of the circular shapes (20) covers or partly covers said identified bone and or cartilage damage (5) - A third production step (34) comprising producing an implant (1) which is conformed to mimic the volume and shape according to said created virtual model of the implant (42)as well as implants produced by said method.L'invention concerne un procédé de conception (2) destiné à la conception d'un implant personnalisé individuellement (1) fondé sur la réalisation d'un plan informatique tridimensionnel d'un modèle virtuel d'un implant, le procédé de conception comprenant des représentations numériques virtuelles d'une position du modèle virtuel de l'implant (42) dans une vue tridimensionnelle virtuelle (9) d'une articulation d'un patient. Le procédé de conception (2) comprend les étapes suivantes : - une première étape (101) d'identification de lésion comprenant l'identification d'une zone (4) d'os et/ou de cartilage chez un patient comprenant une lésion (5) d'os et/ou de cartilage et la présentation d'une vue tridimensionnelle (9) de ladite zone iden
