Fig. 1From: Posterior hemivertebra resection with unilateral instrumented fusion in children less than 10 years old: preliminary results at minimum 5-year follow-upT1-S1 height: the vertical distance from the midpoint of the superior endplate of T1 to the midpoint of the superior endplate of S1 (a); fusion segment height: vertical distance from the midpoint of the superior endplate of upper UIV to the midpoint of the superior endplate of LIV; concave height: the height between the concave side pedicles of the upper and lower end vertebra of the main curve (b)Back to article page