Biomechanical study comparing four fixation constructs for OTA/AO type 33-A3 (extra-articular supracondylar) distal femur fractures: lateral plate alone, retrograde nail alone, dual-plate (lateral plate + medial LCP), and plate-nail (lateral plate + retrograde nail). Tests were performed in synthetic osteoporotic bone and matched cadaveric femurs under cyclic torsion and axial compression to quantify construct stiffness.
When supplemental fixation is needed for a complex or osteoporotic distal femur fracture — nonunion, severe comminution, anticipated immediate weight-bearing — dual plating offers greater biomechanical stiffness in both torsion and compression than a plate-nail construct, but it requires a medial surgical exposure; choose plate-nail when minimizing soft tissue disruption is the priority, knowing you are accepting reduced construct stiffness partly driven by implant interference.
Biomechanical study comparing four fixation constructs for OTA/AO type 33-A3 (extra-articular supracondylar) distal femur fractures: lateral plate alone, retrograde nail alone, dual-plate (lateral plate + medial LCP), and plate-nail (lateral plate + retrograde nail). Tests were performed in synthetic osteoporotic bone and matched cadaveric femurs under cyclic torsion and axial compression to quantify construct stiffness.
When supplemental fixation is needed for a complex or osteoporotic distal femur fracture — nonunion, severe comminution, anticipated immediate weight-bearing — dual plating offers greater biomechanical stiffness in both torsion and compression than a plate-nail construct, but it requires a medial surgical exposure; choose plate-nail when minimizing soft tissue disruption is the priority, knowing you are accepting reduced construct stiffness partly driven by implant interference.