Figure 2. Six fracture analogs were stabilized with 0.5 mm overdrilled collared angle-stable IM nails (Figure 1(c)). The 7.5 mm nails were straight and the endosteal diameter was intentionally oversized by 2.5 mm to ensure the interlocking hardware was challenged as the primary load path. Prior to and after fatigue testing, the constructs were loaded in separate experiments in torsion, compression (a), and four-point bending (b).