Fig. 4From: Femoral periprosthetic fracture treatment using the Ortho-Bridge System: a biomechanical studyThe construction model of OBS on the testing machine. A A structural model of the OBS was tested using a microcomputer-controlled electronic universal testing machine, with a cast iron cup at the distal femur matched and fixed to the testing machine, and with the femoral head prosthesis at the proximal femur in contact with the white polyethylene cylinder of the testing machine. B The structural model of the OBS was tested on the torsion testing machine. C The proximal femoral head was fixed with clamps at both ends of the testing machine. D The cast iron cup at the distal femur was matched and fixed to the testing machineBack to article page