Abstract

BackgroundThe SRS criteria give the methodological reference framework for the presentation of bracing results, while the SOSORT criteria give the clinical reference framework for an appropriate bracing treatment. The two have not been combined in a study until now. Our aim was to verify the efficacy of a complete, conservative treatment of Adolescent Idiopathic Scoliosis (AIS)according to the best methodological and management criteria defined in the literature.MethodsStudy Design. Retrospective study. Population. We included all AIS patients respecting the SRS inclusion criteria (age 10 years or older; Risser test 0-2; Cobb degrees 25-40°; no prior treatment; less than one year post-menarchal) who had reached the end of treatment since our institute database start in 2003. Thus we had 44 females and four males, with an age of 12.8 ± 1.6 at the commencement of the study. Methods. According to individual needs, two patients have been treated with Risser casts followed by Lyon brace, 40 with Lyon or SPoRT braces (14 for 23 hours per day, 23 for 21 h/d, and seven for 18 h/d at start), and two with exercises only (1 male, 1 female): these were excluded from further analysis. Outcome criteria. SRS (unchanged; worsened 6° or more; over 45° at the end of treatment; surgically treated; two years' follow-up); clinical (ATR, Aesthetic Index, plumbline distances); radiographic (Cobb degrees); and ISICO (optimal; minimal). Statistics. Paired ANOVA and t-test, Tukey-Kramer and chi-square test.ResultsMedian reported compliance during the 4.2 ± 1.4 treatment years was 90% (range 5-106%). No patient progressed beyond 45°, nor was any patient fused, and this remained true at the two-year follow-up for the 85% that reached it. Only two patients (4%) worsened, both with single thoracic curve, 25-30° Cobb and Risser 0 at the start. We found statistically significant reductions of the scoliosis curvatures (-7.1°): thoracic (-7.3°), thoracolumbar (-8.4°) and lumbar (-7.8°), but not double major. Statistically significant improvements have also been found for aesthetics and ATR.ConclusionRespecting also SOSORT management criteria and thus increasing compliance, the results of conservative treatment were much better than what had previously been reported in the literature using SRS criteria only.

Highlights

  • The SRS criteria give the methodological reference framework for the presentation of bracing results, while the SOSORT criteria give the clinical reference framework for an appropriate bracing treatment

  • Respecting SOSORT management criteria and increasing compliance, the results of conservative treatment were much better than what had previously been reported in the literature using SRS criteria only

  • The absolute aim is for all patients to avoid surgery, but we have the goal of obtaining an optimal result as stated in the table

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Summary

Introduction

The SRS criteria give the methodological reference framework for the presentation of bracing results, while the SOSORT criteria give the clinical reference framework for an appropriate bracing treatment. There are only two solid studies published in the literature: a controlled observational trial by Nachemson et al[1] gives results in favour of bracing; the Wong et al [2] randomised controlled study suggests the superiority of a rigid TLSO over the SpineCor brace. Considering the surgery rates in curvatures between 20° and 45° at the start of treatment, the results varied greatly: in a total of 1814 patients, two papers had rates below 10%, six between 11% and 20%, two between 21% and 30%, five between 31% and 40%, and one exceeding 41% Given such an extent of variation, there was no difference found by comparison with the natural history papers (139 patients), in which two out of three reported a 13% surgery rate, and the other 38.3% [3]. This big variability of results of bracing can have many causes, including methodological bias, quality of bracing and compliance

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