Purpose: To critically examine reported data to compare patient outcomes between load-sharing and load-bearing plate fixation for edentulous mandibular fractures.
Materials and methods: A systematic review and meta-analysis were designed to test the null hypothesis of no difference in postoperative outcomes between load-sharing and load-bearing plate fixation in atrophic, edentulous mandibular fractures. The PubMed, EMBASE, Cochrane Library, Elsevier text mining tool database, and clinicaltrials.gov trial registries were queried up until July 2016. The quality of evidence was determined using the Grading of Recommendations Assessment, Development, and Evaluation method.
Results: A total of 1212 studies were screened for inclusion of which we included 1 high-quality Cochrane review, 6 narrative reviews, and 21 publications of case reports and case series. Overall, the quality of evidence was low. No difference was found between load-bearing and load-sharing fixation in functional recovery, nonunion, or infection. An uncontrolled case series portrayed complete functional and morphological restoration in 96.9% of patients (83.2-99.5; 95% confidence interval) in load-bearing osteosynthesis while another demonstrated the same outcome in only 40.0% of patients (17.5-65.0; 95% confidence interval).
Conclusions: The authors did not find a statistically significant difference between load-bearing and load-sharing plate fixation in edentulous atrophic mandibular fracture patients; although this finding may be influenced by type 2 statistical error. Surgeons should continue to use their best clinical judgment in deciding on treatment approach for these challenging fractures. Future studies with higher level evidence are necessary to guide optimal fracture management.
Copyright © 2021 by Mutaz B. Habal, MD.