Matrix Wave^{<span style="mso-bidi-font-family: 'Times New Roman \(Textkörper CS\)';">TM}System for Mandibulo-Maxillary-Fixation—Just Another Variation on the MMF Theme?—Part I: A Review on the Provenance, Evolution and Properties of the System

Study design: The advent of Matrix WaveTM System (Depuy-Synthes) - a bone anchored Mandibulo-Maxillary Fixation (MMF) system merits closer consideration because of its peculiarities. Objective: This article alludes to two preliminary stages in the evolution of the Matrix WaveTM MMF System and details its technical and functional features. Results: The Matrix WaveTM System (MWS) is characterized by a smoothed square shaped Titanium rod profile with a flexible undulating geometry unique from the flat plate framework in Erich arch bars. Single MWS segments are Omega-shaped and carry a tie-up-cleat for interarch linkage to the opposite jaw. The ends at the throughs of each MWS segment are equipped with threaded screw holes to receive locking screws for attachment to underlying mandibular or maxillary bone. A MWS can be partitioned into segments of various length from single Omega-shaped elements over incremental chains of interconnected units up to a horseshoe-shaped bracing of the dental arches. The sinus wave design of each segment allows for stretch, compression and torque movements. So the entire MWS device can conform to distinctive spatial anatomic relationships. Displaced fragments can be reduced by in-situ-bending of the screw fixated MWS/Omega segments to obtain accurate realignment of the jaw fragments for the best possible occlusion. Conclusion: The Matrix WaveTM MMF System is an easy to apply modular MMF system, that can be assembled according to individual demands. Its versatility allows to address most facial fracture scenarios in adults. The option of an &ldquo;omnidirectional&rdquo; in-situ-bending provides a distinctive feature not found in alternate MMF solutions.