A resorbable polymeric mesh implant is provided for use in the reconstruction of soft tissue defects. The mesh implant is provided with an interlocking knitted structure comprising two or more sets of fibers with different times of degradation, allowing a stepwise increase in the relative distension of the overall mesh over time. The filamentous fibers are knitted together, wherein the filaments of the first set of fibers are interlaced into the filaments of the second set of fibers and at least partly traverse the knit pattern of the second set of fibers such that the filaments of the first set of fibers lock the movement of the part of the mesh formed by the second set of fibers.