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Titel: The effect of an infra-acetabular screw for anatomically shaped three-dimensional plate or standard plate designs in acetabulum fractures: a biomechanical analysis
VerfasserIn: Graul, I.
Marintschev, I.
Pizanis, A.
Herath, S. C.
Pohlemann, T.
Fritz, T.
Sprache: Englisch
Titel: European Journal of Trauma and Emergency Surgery
Verlag/Plattform: Springer Nature
Erscheinungsjahr: 2021
Freie Schlagwörter: Acetabular fracture
Biomechanics
Infra-acetabular screw
Anatomically shaped plate
Suprapectineal
DDC-Sachgruppe: 610 Medizin, Gesundheit
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Background Various plate shapes and implant configurations are used for stabilization of acetabulum fractures via anterior approaches. Little is known about the biomechanical stability of a two-dimensionally shaped “conventional” plate (“J-Plate”—JP) in comparison to three-dimensionally shaped plate configurations (3DP). In addition, the augmentary effect of an infra-acetabular lag-screw (IACS) fixation for anterior column and posterior hemi-transverse acetabulum fractures has not been clarified in comparison of JP and 3DP constructs. This study analyzed the difference between the biomechanical stability of JP compared to 3DP and the role of an IACS in a standardized acetabular fracture model in a single-leg stance loading configuration. Methods In an artificial bone substitute pelvis model (Synbone© Malans, Switzerland), a typical and standardized fracture pattern (anterior column and posterior hemi-transverse) was created with osteotomy jigs. After anatomic reduction the stabilization was performed using JP or 3DP. Eight pelvises per group were axially loaded in a single-leg stance model up to 400 N. After the load cycle, an additional infra-acetabular screw was placed and the measurement repeated. Fragment displacement was recorded by an optical tracking system (Optitrack Prime 13®, Corvallis, USA). Results In the pure placement, 3DP provided significantly superior stability when compared to JP. Augmentation of JP by IACS increased the stability significantly, up to the level of 3DP alone, whereas augmentation of the 3DP did not result in further increase of overall stability. Conclusion The anatomically shaped plate alone provides a superior biomechanical stability in fixation of an anterior column and posterior hemi-transverse fracture model. In a JP fixation the augmentation by IACS provides similar strength as the anatomically shaped 3DP. By use of the anatomically shaped 3DP the need of a clinically risky application of IACS might be avoidable.
DOI der Erstveröffentlichung: 10.1007/s00068-021-01805-x
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-353874
hdl:20.500.11880/32305
http://dx.doi.org/10.22028/D291-35387
ISSN: 1863-9941
1863-9933
Datum des Eintrags: 3-Feb-2022
Fakultät: M - Medizinische Fakultät
Fachrichtung: M - Chirurgie
Professur: M - Prof. Dr. Tim Pohlemann
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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