Breceda A, Sands A, Zderic I, et al. - In this study, the risk of a peri‑implant fracture following consolidated pertrochanteric fractures fixed with short and long cephalomedullary nails (CMN) was explored. Researchers assigned eight intact human anatomical femur pairs into two groups of eight specimens each for nailing applying short or long CMNs. They further investigated torsional stiffness as well as torque at failure, the angle at failure, and energy to failure. Fracture patterns were examined. From a biomechanical perspective, after intramedullary fixation of pertrochanteric fractures, the risk of secondary peri‑implant fracture is similar when applying short or long CMN. Furthermore, the outcomes of this study demonstrate that for both nail versions the fracture pattern does not unexceptionally involve the distal locking screw hole.