Concordance Rates of Adolescent Idiopathic Scoliosis in a Danish Twin Population.

Study Design: Clinical, radiological, and genetic determination of zygosity of twin pairs from the Danish Twin Registry who self-reported having adolescent idiopathic scoliosis (AIS).

Objective: To establish concordance rates of AIS.

Summary Of Background Data: The etiology of and the true mode of inheritance of AIS remain unclear.