EFFECT OF CLOSED REDUCTION WITH MAXILLOMANDIBULAR FIXATION AND OPEN REDUCTION AND INTERNAL FIXATION

ABSTRACT

Mandibular fracture is one of the commonest facial skeletal injuries and various treatment options have been instituted in its management in the last decade. However, despite the successes recorded with the various treatment options, little is known about the effects of these treatment modalities on pulmonary function. This study compared the effects of closed reduction with maxillomandibular fixation (MMF) and open reduction and rigid internal fixation (ORIF) on pulmonary function (PF) in patients with mandibular fractures. It was a randomized longitudinal study comprised of sixty-six (66) patients that met the inclusion criteria and were randomized into two groups; Group A had ORIF and Group B had MMF as treatment modality respectively. Pulmonary Function Tests (PFTs); FEV1, FVC, FEV1/FVC, PEFR and MVV for all participants were evaluated using the Spirometer preoperatively, 24hrs, 1 week, 2 weeks, 4 weeks, 6 weeks postoperatively and 24 hours and 1 week after removal of the MMF. Data were entered into a preformed questionnaire and statistical analysis was done using the SPSS v 26. Normality tests (Shapiro-Wilk and Kolgomorov–Smirnov test) were conducted on continuous variables to determine the applicability of non-parametric or parametric tests. Socio-demographic characteristics of the study participants were conducted using the Chi-Square, Fisher statistics and the Yates continuity correction where applicable. Continuous variables were analyzed using one-way ANOVA and presented using means and Standard Error of Mean (SEM).