Concordance for Curve Type in Familial Idiopathic Scoliosis

Autor: Jérôme Sales de Gauzy, Catherine Arnaud, Franck Accadbled, Hélène Grandjean, Quentin Ballouhey
Rok vydání: 2010
Předmět:
Zdroj: Spine. 35:1602-1606
ISSN: 0362-2436
DOI: 10.1097/brs.0b013e3181c7d28a
Popis: STUDY DESIGN Prospective comparative study on 100 patients with positive family history for idiopathic scoliosis. OBJECTIVE To evaluate the concordance rate for curve pattern and side in family members with idiopathic scoliosis. SUMMARY OF BACKGROUND DATA The pathogenesis of idiopathic scoliosis has been the subject of extensive research. It is termed multifactorial with a genetic component. Similar curve shape has been reported in twins with idiopathic scoliosis. METHODS We included prospectively 100 patients with idiopathic scoliosis when a relative of them was also affected with idiopathic scoliosis, and spine radiographs were available for both. Concordance for curve pattern by Lenke classification and side between family members was analyzed. RESULTS Familial concordance rate for curve pattern and side was 66% (95% confidence interval, 57-75), whereas the expected random concordance rate was 26% (95% confidence interval, 17-34). The affected relative was in 27 cases a sibling, in 32 cases a parent, in 1 case an uncle, in 2 cases a cousin, in 2 cases a half sister, in 2 cases a grandmother. Concordance rate was 65% (27/42) in siblings' pairs and 67% (32/48) in parents/child's pairs. CONCLUSION We report a high concordance rate for curve pattern and side between relatives with idiopathic scoliosis. Curve shape is likely to be genetically determined in familial scoliosis. It seems important that curve type is documented and considered in future genetic studies.
Databáze: OpenAIRE