Biomechanical properties of five different currently used implants for open-wedge high tibial osteotomy
| Autor: | Dietrich Pape, Danièle Waldmann, Klaus Dueck, Stefan Maas, Andreas Zilian, Arnaud Diffo Kaze |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
Cyclic stress Materials science High tibial osteotomy (HTO) Stiffness Multidisciplinaire généralités & autres [C99] [Ingénierie informatique & technologie] High tibial osteotomy TomoFix Osteoarthritis medicine Orthopedics and Sports Medicine Displacement (orthopedic surgery) Biomechanics Joint (geology) Orthodontics ContourLock Research Multidisciplinary general & others [C99] [Engineering computing & technology] Valgus malrotation Fatigue limit PEEKPower Surgery iBalance High tibial Osteotomy (HTO) Cyclic and static loading Mechanical test Implant medicine.symptom |
| Zdroj: | Journal of Experimental Orthopaedics Journal of Experimental Orthopaedics, 2(14). Heidelberg, Germany: SpringerOpen (2015). |
| ISSN: | 2197-1153 |
| Popis: | Background: As several new tibial osteotomy plates recently appeared on the market, the aim of the present study was to compare mechanical static and fatigue strength of three newly designed plates with gold standard plates for the treatment of medial knee joint osteoarthritis. Methods: Sixteen fourth-generation tibial bone composites underwent a medial open-wedge high tibial osteotomyn(HTO) according to standard techniques, using five TomoFix standard plates, five PEEKPower plates and six iBalance implants. Static compression load to failure and load-controlled cyclic fatigue failure tests were performed. Forces, horizontal and vertical displacements were measured; rotational permanent plastic deformations, maximal displacement ranges in the hysteresis loops of the cyclic loading responses and dynamic stiffness were determined. Results: Static compression load to failure tests revealed that all plates showed sufficient stability up to 2400 N without any signs of opposite cortex fracture, which occurred above this load in all constructs at different load levels. During the fatigue failure tests, screw breakage in the iBalance group and opposite cortex fractures in all constructs occurred only under physiological loading conditions ( |
| Databáze: | OpenAIRE |
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