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Optimizing Hybrid Plate Fixation With A Locked, Oblique End Screw In Osteoporotic Fractures, Patrick Atkinson, Aaron Wynkoop, Osy Ndubaku, Paul M. Charpentier, Jeffrey B. Peck, Norman E. Walter
Optimizing Hybrid Plate Fixation With A Locked, Oblique End Screw In Osteoporotic Fractures, Patrick Atkinson, Aaron Wynkoop, Osy Ndubaku, Paul M. Charpentier, Jeffrey B. Peck, Norman E. Walter
Mechanical Engineering Publications
Background
The end screw in a fracture plate creates the greatest resistance to bending. For osteoporotic fractures treated with plates, there is some question as to the optimal screw insertion technique for the screw farthest from the fracture. A locked, oblique end screw was previously shown to increase resistance to periprosthetic fracture. It is unknown, however, how this end screw configuration would resist pullout when subjected to bending.
Methods
Narrow, low contact 3.5 mm locking compression plates with 6 and 12 holes were anchored to simulated bone material with material properties representing osteoporotic bone. Four configurations were evaluated for the …