The stress shielding result of FE simulation. The general views of the stress shielding result in (A) D1, (B) D2, (C) D3 and (D) the nonporous block structure. The threshold was set to 3.3 MPa in the above 4 stress nephograms. The scaffold part was removed, and the views of the base in (E) D1, (F) D2, (G) D3 and (H) the nonporous block structure are demonstrated. The threshold was set to 3.3 MPa in the above 4 stress nephograms. The stress variation is indicated by arrows in (G) and (H). FE = finite element.