Primary fixation stability evaluation of pre-bent titanium miniplate configurations in mandibular reconstruction

Mandibular reconstruction is a commonly performed procedure in maxillofacial surgery with many different possible reconstructive strategies. Generally, modular fixation with miniplates has the advantage of an easier plate removal, mostly possible through an intraoral access. For patient-specific plates, the combination of reconstruction plates in the posterior area with anterior miniplates has been described as biomechanically and clinically beneficial. To our knowledge, conventional miniplates have not been biomechanically assessed in combination with reconstruction plates. Therefore, the present study aimed to evaluate combinations of pre-bent anterior miniplates with a posterior pre-bent reconstruction plate in silico as an alternative to pre-bent fixation strategies including only miniplates. The results indicate, that from a biomechanical perspective, the combination of a posterior pre-bent short reconstruction plate with anterior pre-bent miniplates is a viable alternative to fixation strategies including solely pre-bent miniplates. The process of pre-bending did not affect intersegmental strains. Analogously to patient-specific plates, the combination of a posterior pre-bent reconstruction plate with pre-bent anterior miniplates seems a surgically and biomechanically promising alternative to fixation strategies with pre-bent miniplates alone.

Subjects

biomechanics

conventional miniplates

conventional reconstruction plate

finite element analysis

intersegmental strain

mandibular reconstruction

pre-bending

stress

DDC Class

617.9: Operative Surgery and Special Fields of Surgery

610: Medicine, Health

620.1: Engineering Mechanics and Materials Science

Lizenz

https://creativecommons.org/licenses/by/4.0/

Publication version

publishedVersion

Dateiname

fbioe-14-1697119.pdf

Typ

Main Article

Größe

2.8 MB

Format

Adobe PDF

Optionen

Primary fixation stability evaluation of pre-bent titanium miniplate configurations in mandibular reconstruction