Abstract
Conclusions and discussion At this stage, the following explanatory hypotheses can be drawn: Technical radiological differences (exposure, machine) Variation of pelvis positioning Postural changes influencing the pelvis Brace compression on the pelvis According to our study results, all of the hypotheses include data both in favor and against the reliability of the Risser sign. Since the Risser sign is a 2D evaluation of a 3D phenomenon, pelvis repositioning could perhaps be the most plausible explanation. This case series is open to the possibility that the Risser sign is even less reliable than originally considered. Unfortunately, this result cannot be checked experimentally due to ethical reasons. Nevertheless, observational designs could be considered in the future.
Highlights
The low reliability of the Risser sign has been described in previous studies; the test/retest reliability of the Risser sign in different radiographs has not been examined or reported.Purpose The goal of this report was to present data collected from studying a group of adolescent idiopathic scoliosis (AIS) patients whose Risser sign decreased in two consecutive X rays
By chance, a reduction of the Risser test was discovered in one patient
At this stage, the following explanatory hypotheses can be drawn: Technical radiological differences Variation of pelvis positioning Postural changes influencing the pelvis Brace compression on the pelvis According to our study results, all of the hypotheses include data both in favor and against the reliability of the Risser sign
Summary
Purpose The goal of this report was to present data collected from studying a group of adolescent idiopathic scoliosis (AIS) patients whose Risser sign decreased in two consecutive X rays. Methods Case series using the European Risser test.
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