Implants for bone and cartilage repair

A biocompatible and bioresorbable implant having a physically and mechanically stable bi-phasic structure for the repair of bone and cartilage, comprising a cell conductive zone that contains a first matrix of first type I collagen fibers, the first type I collagen fibers having a length of 1 cm to 50 cm, and an osteoconductive zone consisting of a second matrix of second type I collagen fibers also having a length of 1 cm to 50 cm and calcium-containing mineral particles, wherein the first matrix of first type I collagen fibers is a demineralized bone matrix, the calcium-containing mineral particles include carbonate apatite and have a size of 0.2 mm to 1.5 mm, the cell conductive zone is free of calcium-containing mineral particles, the first type I collagen fibers extend into the osteoconductive zone and overlap with the second type I collagen fibers, and the cell conductive zone overlaps with and is in direct contact with the osteoconductive zone.