The treatment of child's vertebral malformations has evolved a lot including the realization of surgical vertebral resections. The surgical techniques used are multiple, require heavy surgery, one or more approaches and surgical time, transfusions, a neurological risk (up to 20% in some series, risk of non-consolidation, insufficient correction). These surgical techniques deserve an evaluation of the early complications and the skeletal maturity of these children (maintenance of the surgical correction, evolution of the associated curvatures).

The treatment of child's vertebral malformations has evolved a lot including the realization of surgical vertebral resections. The surgical techniques used are multiple, require heavy surgery, one or more approaches and surgical time, transfusions, a neurological risk (up to 20% in some series, risk of non-consolidation, insufficient correction). These surgical techniques deserve an evaluation of the early complications and the skeletal maturity of these children (maintenance of the surgical correction, evolution of the associated curvatures).

Inclusion Criteria:

• Child from 3 to 10 years old
• with a vertebral malformation requiring surgery for hemivertebras

Exclusion Criteria:

• Child previously operated on the spine
• Different procedure of a surgical resection of vertebral malformation
• Absence of medical follow-up
• Parents refusal concerning data storage

children from 3 to 10 years old with vertebral malformation requiring surgery for hemivertebra