POLICY OF FOURTEEN MAXILLOFACIAL DIVISIONS TOWARDS TITANIUM PLATES REMOVAL AFTER INTERNAL FIXATION OF PAEDIATRIC MAXILLOFACIAL FRACTURES: A WORLD ORAL MAXILLOFACIAL TRAUMA (WORMAT) PROJECT.

The aim of this 11-year retrospective multicentric study is to evaluate the policy of 14 maxillofacial surgery divisions in terms of titanium plate removal from paediatric populations who had undergone open reduction and internal fixation (ORIF) to treat maxillofacial fractures. Patients ≤ 16 years undergoing surgical treatment for fractures of middle and lower third of the face between January 2011 and December 2022, with a minimum follow-up of 6 months, were included. Age (group A: ≤ 6 years, B: 7-12 years, C: 13-16 years), sex, fracture location and type, surgical approach, number, and location of positioned and removed plates, timing and indications for removal were recorded. 191/383 (50%) patients (median age, 10 years; M:F ratio 2.1:1) underwent removal of 319/708 (45%) plates. Maxillary dentoalveolar process (91%), angle/ramus (63%) and mandibular body (61%) had a significantly higher removal rate than other fracture sites (p<0.001). A significant decreasing trend in removal with increasing age was observed, from 83% in Group A to 24% in Group C (p<0.001). On the total of positioned plates, 11% were removed for symptomatic reasons (5% infections, 6% discomfort/pain) and 34% for other reasons (28% scheduled removal). This multicentric study showed that plate removal was not performed routinely in the paediatric population. The incidence and causes of symptomatic plates removal are consistent with the literature, while the plate removal rate from asymptomatic patients was lower. A correlation was found between increasing age and a reduction in the frequency of plate removal procedures.

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Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.