Évaluation expérimentale des déplacements des fragments osseux avec un fixateur hexapode au moyen de diodes infrarouge sur os synthétique - 23/08/22
Experimental assessment of changes in bone fragment position using infra read diodes on saw bone models with a hexapod fixator
, Bartosz Martyniuk c, Andżelika Pajchert Kozłowska a, Jarosław Filipiak cAbstract |
Background |
The purpose of this study was an experimental assessment of changes in bone fragment position in patients with nonunion of the tibia treated with a hexapod fixator.
Hypothesis |
We hypothesized that the use of hexapod fixators leads to differences between the planned and actual position of bone fragments.
Methods |
The study was conducted in physical models of the hexapod fixator–bone fragment system. Bone fragment displacement was measured using the Optotrak Certus Motion Capture System. We assessed differences between the planned and actual position of bone fragments.
Results |
Assessment of bone fragment compression demonstrated a difference between the target and actual correction ranging from 1.5% to 13.2% (depending on the force applied to bone fragments) for configuration 1, from 17% to 21.3%for configuration 2,and from 13.2%to17.9% for configuration 3. The achieved varus deformity correction constituted 93.7–98.4%of the target correction for configuration 2 and 98.3–98.9%of the target correction for configuration 3.Torsional deformity correction showed considerable discrepancies between the target and achieved correction, ranging from 65.6% to 83%.
Discussion |
The value of the applied compression force had no marked effect on the differences between the target and achieved correction or on the magnitude of unintended rotational and transverse displacement of bone fragments. The use of hexapod fixators helped achieve complete correction of the simulated varus deformity; however, complete correction of torsional deformities was not achieved. Deformity correction in physical models with the use of a hexapod fixator yielded instances of unintended rotational and transverse bone-fragment displacement. The use of hexapod fixators in physical models leads to differences between the planned and actual position of bone fragments.
Level of Evidence |
IV, case series.
Il testo completo di questo articolo è disponibile in PDF.Keywords : Experimental, Bone fragment position, Tibial nonunion, Hexapod fixator
| ☆ | Cet article peut être consulté in extenso dans la version anglaise de la revue Orthopaedics & Traumatology: Surgery & Research sur Science Direct (sciencedirect.com) en utilisant le DOI ci-dessus. |
Vol 108 - N° 5
P. 553 - Settembre 2022 Ritorno al numero
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