An implant for the stabilization of bones or vertebrae is provided, the implant (1) being a solid body comprising a longitudinal axis (L) that defines a longitudinal direction and comprising a flexible section that has a surface and has a length (l) in the longitudinal direction； wherein the flexible section comprises at least one cavity (12) located near the surface and having a width (w) in the longitudinal direction that is smaller than the length of the flexible section, wherein the at least one cavity is connected to the surface through at least one slit (13) and wherein a width (ws) of the slit in the longitudinal direction is smaller than the width (w) of the cavity.本案提供一種骨骼或脊椎穩定用植入體，植入體(1)係實心本體，包括縱軸線(L)，界定縱向，又包括撓性段，具有表面，在縱向有一長度(l)；其中撓性段包括至少一凹孔(12)，位於接近表面，在縱向有一寬度(w)，比撓性段長度小；其中至少一凹孔經至少一開縫(13)，與表面連接；且其中開縫在縱向寬度(ws)比凹孔之寬度(w)小。
