The Monobloc Distraction With Facial Bipartition

Outcomes of Simultaneous Multidimensional Facial Movement Compared With Monobloc Distraction or Facial Bipartition Alone

Abstract

Background 

Although combined monobloc facial bipartition with distraction (MFBD) may simultaneously correct multiple facial dimensions in patients with syndromic craniosynostoses, complication risks limit its use. This study reassesses MFBD complications and outcomes to compare safety and efficacy to monobloc distraction (MD) and facial bipartition (FB) alone.

Methods 

A retrospective review of MFBD, MD, and FB cases for 10 years at a tertiary children's hospital was performed. Patient demographics and surgical variables were compared between cohorts. Distraction distance was compared between MFBD and MD. Correction of interdacryon distance in MFBD compared with FB was measured on preoperative and postoperative computed tomographic scans. SPSS 17 was used for data analysis.

Results 

Twenty-two total patients, 11 MFBD, 4 MD, and 7 FB, met the inclusion criteria. Three MFBD (27.3%) patients experienced complications, including 1 osteomyelitis and 2 hardware displacements. One MD patient (25%) experienced a postoperative complication consisting of a wound infection. Three FB patients (42.9%) experienced either cerebrospinal fluid leak, seroma, mucocele, hardware exposure, and/or orbital dystopia (n = 1 each). Patients with MFBD had significantly longer intensive care unit stay (P ≤ 0.05), but no difference in hospital stay (P = 0.421). Mean distraction length was similar between MFBD and MD (P = 0.612). There was no significant difference in final (P = 0.243) or change (P = 0.189) in interdacryon distance between MFBD and FB patients.

Conclusions 

In our experience, MFBD has similar complication rates compared with MD and FB alone. Given equivalent safety and postoperative correction of facial dimensions, MFBD could be more widely considered for select patients.