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Children's Orthopaedics

USE OF RECOMBINANT HUMAN BONE MORPHOGENIC PROTEIN IN CHILDREN

Combined British Limb Reconstruction Society (BLRS) & British Society for Children's Orthopaedic Surgery (BSCOS) AGM & Instructional Course – additional abstracts.



Abstract

Aim

To study the results of using recombinant human bone morphogenic protein-2 (rhBMP-2) to achieve bone union in children with complex orthopaedic problems including skeletal dysplasia, congenital limb deficiencies and complex trauma.

Materials & Methods

Between November 2006 to April 2010, rhBMP-2 was used to achieve bone healing in a total of 19 children. The indications were delayed union or non-union in 16 long bones where previous surgeries had failed and 4 posterior spinal fusions. All children had underlying complex orthopaedic problems predisposing them to delayed bone healing. The average age at the time of surgery was 13 years and 8 months (Range: From 4 years to 19 years and 4 months). There were 7 boys and 12 girls.

Results

Average follow-up period was 9.6 months (Range: From 3 months to 2 years and 2 months). Out of the 16 long bone non-unions treated with rhBMP-2, 13 united without further interventions but 3 required further intervention. The average time for clinical union was 10 weeks (Range: from 6 weeks to 18 weeks). The average time for radiological union was 15 weeks (Range: from 7 weeks to 27 weeks). Two children who underwent instrumented posterior spinal fusion and two children who underwent uninstrumented spinal fusion achieved radiologically evident spinal fusion at an average of 16 weeks.

No local or systemic complications attributable to BMP were noted in any of the children.

Conclusions

rhBMP-2 can be used successfully to achieve bone healing in long bone nonunion and delayed union and posterior spinal fusion in children with complex orthopaedic problems including skeletal dysplasia, congenital limb deficiencies and complex trauma. Its use in children has shown no unwanted effects in the short term.

Significance

rhBMP-2 has been approved by Food and Drug Administration (FDA) as a bone graft substitute in adults. Its use in adults has been widely reported but there are only a few case reports of its use in children. This study shows that rhBMP-2 can be safely