Footnotes

• Contributors The authors were all involved in treatment of patient. MN performed data collection, analysis and article writing. R-BT performed surgery and contributed to critical revision. WF performed anesthesia and provided pictures. MB, VS and WF contributed to critical revision.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Patient consent Parental/guardian consent obtained.

• Provenance and peer review Not commissioned; externally peer reviewed.