The Journal of Bone and Joint Surgery, Vol 75, Issue 12 1804-1810, Copyright © 1993 by Journal of Bone and Joint Surgery, Inc
Progression of the curve in boys who have idiopathic scoliosis
LA Karol, CE Johnston, RH Browne and M Madison
Department of Pediatric Orthopaedics and Scoliosis Surgery, Texas Scottish Rite Hospital for Crippled Children, Dallas, Texas 75219.
The prevalence of curve progression was evaluated in 210 boys who had
idiopathic scoliosis. A minimum age of eight years, a deformity of at least
10 degrees, and radiographic follow-up of one year or progression of the
curve within the first year of follow-up were the criteria for inclusion in
the study. Of the 210 patients, sixty-eight (32 per cent) had progression
of 10 degrees or more. Four of the five patients who had had an initial
curve of 50 degrees or more subsequently had a spinal arthrodesis. The risk
of progression was significantly greater for patients who were at an
earlier Risser stage (p < 0.002) and for those who were younger (p <
0.005). The risk of progression was also greater for patients who had had a
larger curve at the time of presentation; of the sixty-three boys for whom
the Risser grade was 1, 2, 3, 4, or 5 when they were first seen and who had
a curve of 25 degrees or more, twenty (32 per cent) had progression,
compared with only two (5 per cent) of the thirty-eight who had a Risser
grade of 1, 2, 3, 4, or 5 and a curve of 24 degrees or less. Of the
thirty-four patients for whom the Risser grade was 4 when they were first
seen, five (15 per cent) had progression.(ABSTRACT TRUNCATED AT 250 WORDS)
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