Development of Multidirectional Cranial Distraction Osteogenesis for the Treatment of Craniosynostosis.

Background: Previously, the authors developed a new method of distraction osteogenesis for the treatment of craniosynostosis, multidirectional cranial distraction osteogenesis (MCDO). The purpose of this study is to review the authors' experience of MCDO for remodeling of the anterior cranium in the patients of craniosynostosis.
Methods: Forty-five patients with craniosynostosis underwent MCDO for anterior cranial remodeling from 2003 to 2017. The ages of the patients ranged from 8 to 72 months (mean: 23.9 months, median: 13 months). The involved sutures included the bicoronal suture in 14 patients, unicoronal suture in 4 patients, sagittal suture in 14 patients, metopic suture in 2 patient, and multiple sutures in 10 patients.
Results: An improvement of in cranial shape was achieved in 40 patients. In 1 patient, intraoperative massive bleeding forced us finishing the procedure before completing the planned osteotomy. Transient cerebrospinal fluid leakage occurred in 3 patients during the activation phase but recovered with conservative therapy. The mean blood transfusion was 25.5 mL/kg. The phase of activation ranged from 7 to 17 days (mean, 10.6 days) and the consolidation period ranged from 16 to 67 days (mean, 32.4 days). Loosening of traction pins occurred in 7 patients, resulting in undercorrection in 2 patients, and loosening of anchor pins occurred in 19 patients, resulting in acceleration of removal of the devices in 7 patients.
Conclusions: Multidirectional cranial distraction osteogenesis was effective and has several advantages over the conventional procedures. Therefore, the authors conclude that MCDO will be a useful alternative for all phenotypes of craniosynostosis.