title: MatrixMANDIBLE preformed reconstruction plates--a two-year two-institution experience in 71 patients.
abstract: OBJECTIVE
  To evaluate handling, complication rates, clinical and treatment outcomes of the MatrixMANDIBLE Preformed Reconstruction Plates (MMPRPs), in particular with regard to the frequency of fatigue fractures and operative time.
  
  
  METHODS
  A cohort of 71 subjects with an indication for a load-bearing osteosynthesis of the mandible was enrolled in the present study. The indications for plate use were defects due to tumor, trauma, or osteonecrosis. The outcome variables were fitting accuracy, application time, and postoperative complications, defined as plate exposure, loosening of plates or screws, plate fracture, and orocutaneous fistulas. Additionally, the feasibility of a transoral approach was tested.
  
  
  RESULTS
  The sample included 71 subjects with a mean age of 54.8 ± 15.0 years, including 43 men (60.6%). MMPRPs could be placed in 70 of the 71 patients. In 10 patients a transoral approach for plate application was successfully performed. The mean time investment to contour the plates was 13.1 minutes. The fitting accuracies of the nonbendable sections were satisfying. No plate fracture was observed within an average follow-up period of 11.8 months. Postoperative complications occurred in 19 (27.1%) of the 70 patients. Plate removal was required in 11 (15.7%) of 70 patients.
  
  
  CONCLUSIONS
  The results of the present study suggest that the use of MMPRPs coincides with a reduced operative time and a minimized risk of fatigue fractures. Thus, MMPRPs seem to be a useful standard device in a scope of indications for load-bearing osteosynthesis of the anterolateral division of the mandible, additionally facilitating a transoral approach for application.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Ludwig-Maximilians-University of Munich, Munich, Germany. florian.probst@med.uni-muenchen.de
authors.forename: Florian Andreas
authors.initials: FA
authors.lastname: Probst
authors.forename: Gerson
authors.initials: G
authors.lastname: Mast
authors.forename: Michael
authors.initials: M
authors.lastname: Ermer
authors.forename: Ralf
authors.initials: R
authors.lastname: Gutwald
authors.forename: Rainer
authors.initials: R
authors.lastname: Schmelzeisen
authors.forename: Christoph
authors.initials: C
authors.lastname: Pautke
authors.forename: Sven
authors.initials: S
authors.lastname: Otto
authors.forename: Sebastian
authors.initials: S
authors.lastname: Schiel
authors.forename: Michael
authors.initials: M
authors.lastname: Ehrenfeld
authors.forename: Carl-Peter
authors.initials: CP
authors.lastname: Cornelius
authors.forename: Marc Christian
authors.initials: MC
authors.lastname: Metzger
mesh_terms: D000328:Adult; D000368:Aged; D001860:Bone Plates; D018786:Bone Substitutes; D016025:Bone Transplantation; D002294:Carcinoma, Squamous Cell / Q000534:rehabilitation; D004867:Equipment Design; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000534:rehabilitation; D063175:Mandibular Reconstruction / Q000295:instrumentation* / Q000379:methods; D008875:Middle Aged; D061646:Operative Time; D010025:Osteoradionecrosis / Q000534:rehabilitation; D011183:Postoperative Complications; D013524:Surgical Flaps; D016896:Treatment Outcome
chemical_list: D018786:Bone Substitutes