Critical Loss of Primary Implant Stability in Osteosynthesis Locking Screws
... under Cyclic Overloading
Recent publication
How can you predict the stability of a bone implant? In order to provide the best possible advice to the patient, it is important for the surgeon to understand and take into account the critical points for implant stability. While implant screws are statically tested for thier holding capacity, they are subjected to dynamic and repetitive loads after the implant is placed. These cyclic loads can lead to microcracking, which compromises the stability of the implant. A team of researchers at Karl Landsteiner University has used a special test rig to measure the forces, displacements and deformations that occur between 2.5mm locking screws and the bone under cyclic loading. Their results provide a better estimate of the expected degradation of implant screws due to their loading in the human body. The study has been published open access in the journal "Medical Engineering and Physics" and was supported by the “Gesellschaft für Forschungsförderung Niederösterreich m.b.H.”.
Silva-Henao, JD, Schober, S, Pahr, DH & Reisinger, AG 2024, 'Critical Loss of Primary Implant Stability in Osteosynthesis Locking Screws under Cyclic Overloading', Medical Engineering and Physics, pp. 104143. https://doi.org/10.1016/j.medengphy.2024.104143
Dr. Sophie Schober MSc
Scientific Staff (PostDoc), Head of Skills Lab
Human Medicine
Univ.-Prof. DI Dr. Dieter Pahr
Head of
Division of Biomechanics
DI Dr. Andreas Reisinger
Scientific Staff (Sen. PostDoc), Head of biomechanics lab
Division of Biomechanics
