FE model strain distributions of hip prostheses virtually implanted in FE models of a femur (Construct B). (a) Modular hip stem, (b) femur into which the Modular hip stem was inserted, (c) Monoblock hip stem, (d) femur into which the Monoblock hip stem was inserted. Strains shown are equivalent elastic strain (Von Mises) in mm/mm units. Results are for 2000 N axial load. Posterior view is shown.