Ti-6al-4v Intervertebral Fusion Cage with Compatible Stiffness, Enhanced Fatigue Life, and Osteogenic Differentiation

A nonradiographic strategy to real‐time monitor the position of three‐dimensional‐printed medical orthopedic implants by embedding superparamagnetic Fe3O4 particles

“…Notably, two stainless steel blocks were contacted with the SIBFC to transfer static axial load per ASTM F2077, while two grade 15 rigid polyurethane foam blocks (intended to mimic the compression properties of trabecular bone) for subsidence test per ASTM F2267. [ 50 ]…”

“…PEEK is biomechanically similar to cortical bone, with a smaller elastic modulus favorable for reducing stress shielding effect compared to titanium alloy. [50][51][52] To further evaluate the mechanical properties of SIBFC, two kinds of normative tests were conducted.…”

“…Notably, two stainless steel blocks were contacted with the SIBFC to transfer static axial load per ASTM F2077, while two grade 15 rigid polyurethane foam blocks (intended to mimic the compression properties of trabecular bone) for subsidence test per ASTM F2267. [50] The magnetic property of Fe 3 O 4 /Ecoflex composite was characterized using a VSM (VSM, LakeShore 7404) under an applied magnetic field sweeping from −20 to 20 k Oe. The magnetic induction intensity distribution surrounding SIBFC in the applied magnetic field was measured by a multidimensional magnetic field test system (F-30; CH-Magnetoelectricity Technology) at 1 mm apart from the top surface of SIBFC.…”