Influence of the fixation stability on the healing time — A numerical study of a patient-specific fracture healing process

Temporal Variation in Fixation Stiffness Affects Healing by Differential Cartilage Formation in a Rat Osteotomy Model

“…Whereas 32% is a stable fixation that provides enough IFS to stimulate callus formation, 100% (contact between the fragments) is a very flexible fixation. Recent data demonstrated the loading in the rat femur could even be higher [35]. Clinically, the risk of a too flexible fixation generally outweighs the risk of a too stiff fixation [14].…”

Lumbar interbody fusion: a parametric investigation of a novel cage design with and without posterior instrumentation

“…An arbitrary friction coefficient of 0.5 was chosen; it could be expected that this assumption may have a relevant influence on some results, i.e., the movement. Therefore, the friction coefficient could be considered an additional degree of freedom in the design process, e.g., by modifying the surface rugosity of the soft layers, allowing to achieve movement values that would promote bony growth at best [34]. A parametric FE investigation of this parameter would be helpful in supporting the design.…”

Mediale Abstützung mit kortikalem intramedullärem Interponat bei winkelstabiler Plattenosteosynthese der proximalen Humerusfraktur

“…Um dies zu verhindern, muss entweder das verwendete Implantat von ausreichender Flexibilität sein, um den Übergang zwischen Schraube und Knochen hinreichend zu entlasten [19], oder es muss ein Implantat-Knochen-Komplex solcher Stabilität gebildet werden, dass eine angreifende Kraft anderweitig abgefangen werden kann. Eine höhere Steifigkeit der Fixation führt zu schnellerer Knochenheilung [37], folglich muss eine zu hohe Flexibilität des Implantats vermieden werden. Die Kombination von winkelstabiler Plattenosteosynthese und kortikalem Interponat scheint diesen Anforderungen gerecht zu werden.…”