Friday, March 19, 2004 - 9:38 AM
5359

Symptomatic plate removal in maxillofacial trauma

Ananth S. Murthy, MD and James A Lehman, MD, FACS.

This study reviewed the fate of titanium plates used to correct maxillofacial trauma in 76 patients over 10 years, and define risk factors for plate removal. Variables included age, sex, trauma type, diagnosis, fracture type, fracture diagnosis, plate location, surgical approach, and reasons for plate removal. Fracture diagnosis was described as panfacial(42%), blow-out(3%), midface(28%), zygoma(26%), mandible angle(6%), ramus(7%) and symphysis(9%). All plate removals according to fracture diagnosis were in the mandible angle(30%) and symphysis(20%). When plate location was reviewed, plates were placed in the Frontozygomatic suture(18%), Zygomaticomaxillary suture(19%), Infraorbital rim(14%) and mandible symphysis(15%), mandible angle(9%), piriform(6%), nasal(5%), mandible ramus(4%) and body(4%), zygoma(2%) and frontal(2%). Of 163 plates that were placed, 6 plates(3.7%) were removed. Three(12%) of the symphysis plates and 3(20%) of the angle plates were removed. Among all variables, only fracture diagnosis(p=0.001) and plate location(p=0.001) was statistically significant for plate removal. Four plates were removed for abcess/infection, one plate was removed for osteomyelitis and one plate was removed for non-union. Further review revealed that 4 out of 6 plates removed involved synchronous mandible fractures. Vigilance is needed in the treatment of mandible angle and symphyseal fractures, especially if there are synchronous fractures, to prevent plate removal and subsequent malunion.