Zaina Fabio, Donzelli Sabrina, Lusini Monia, Negrini Stefano
Italian Scientific Spine Institute, Milan, Italy.
Stud Health Technol Inform. 2012;176:342-5.
In-brace radiographic correction is considered a reliable check of brace efficacy. The aim of this study was to correlate the in-brace correction with the short term results of treatment (6 months).
pre-post study
41 consecutive adolescent girls with idiopathic scoliosis who were prescribed a brace treatment (39 thoracic curves, 37±12°; 16 thoracolumbar, 38±13°; 12 lumbar, 31±8°. Risser 0-3). In-brace radiographic correction and 6 months treatment out of brace X-ray results were correlated, according to curve localization. The in-brace/out-of-brace ratio was calculated, curves were grouped according to the Risser sign, the results (<10°, ≥10° out-of-brace), in-brace correction (<10°, ≥10°), the magnitude (<30°, 30°-45°, >45°).
Correlation Coefficient.
The in-brace/out-of-brace ratio varied according to localization of curve and Risser, achieving the best results for thoracic curves (38-45%). The groups of thoracolumbar and lumbar had higher variability (17-65% and 17-40%). The correlation coefficient between in-brace correction and out-of-brace results was statistically significant: 0.85 for thoracic curves, 0.64 thoracolumbar, 0.72 lumbar. Risser groups: 0.65-0.98 thoracic, 0,78-0.90 thoracolumbar, 0.94-0.98 lumbar. For Results groups, the correlation was better for the group with high degree of correction (High results) in lumbar and the group with low degree of correction (Low results) for thoracolumbar, no differences for thoracic. Low in-brace correction had a low correlation coefficient for thoracic and lumbar curves. No differences for Magnitude.
The in-brace correction ranges from 17 to 47% of the curve magnitude. The correlation between in-brace correction and short time results of brace is significant, range 0.64-0.98. The in-brace correction seems able to predict the short time results of treatment.
支具内X线矫正被认为是支具疗效的可靠检查方法。本研究的目的是将支具内矫正与治疗的短期结果（6个月）进行相关性分析。
前后对照研究
41例连续的特发性脊柱侧凸青春期女孩，她们接受了支具治疗（39例胸弯，37±12°；16例胸腰弯，38±13°；12例腰弯，31±8°。Risser 0-3级）。根据曲线定位，将支具内X线矫正与支具外6个月治疗的X线结果进行相关性分析。计算支具内/支具外比率，根据Risser征对曲线进行分组，结果（支具外<10°、≥10°），支具内矫正（<10°、≥10°），弯曲程度（<30°、30°-45°、>45°）。
相关系数
支具内/支具外比率根据曲线定位和Risser征而变化，胸弯的结果最佳（38-45%）。胸腰弯和腰弯组的变异性较高（17-65%和17-40%）。支具内矫正与支具外结果之间的相关系数具有统计学意义：胸弯为0.85，胸腰弯为0.64，腰弯为0.72。Risser分组：胸弯为0.65-0.98，胸腰弯为0.78-0.90，腰弯为0.94-0.98。对于结果分组，腰弯中矫正程度高的组（高结果）和胸腰弯中矫正程度低的组（低结果）的相关性更好，胸弯无差异。支具内低矫正对于胸弯和腰弯的相关系数较低。弯曲程度无差异。
支具内矫正范围为曲线程度的17%至47%。支具内矫正与支具短期结果之间的相关性显著，范围为0.64-0.98。支具内矫正似乎能够预测治疗的短期结果。
