The compression of vascular and nerve structures for the upper limbs is the origin of TOS. If the clinical forms are variable (arterial, venous, neurological form), the functional discomfort in the activities of the daily life can be serious. Global scales (EN, DASH, CBSQ) can be used to evaluate the functional impact, but this evaluation is nonspecific. A specific scale was built and used during the rehabilitative treatment carried out in Lille. The purpose of this study is to evaluate its validity.

A self-questionnaire was constructed.16 items were evaluated in 4 categories: impossible, major discomfort, moderate discomfort, without difficulty. An overall score is calculated. An evaluation is carried out parallel by a numerical scale. The self-questionnaire is completed on day 1, day 2 and the last day (LD). Between May 2015 and July 2017, 37 subjects were evaluated.

There is excellent intra-observer reproducibility (correlation coefficient=0.92464). There is a significant improvement between D1 and LD (mean difference=−6.4594595, P<0.0001). The correlation between the EN and the total score is good at D1 (correlation coefficient at 0.66796, P<0.0001) and at LD (correlation coefficient at 0.67313, P<0.0001) and mean at D2 (correlation coefficient at 0.53485; P=0.0008). There is an improvement in all items studied between D1 and LD, although the difference is significant for only 9 items.

The questionnaire is a fast, simple way of assessing and focusing on activities of daily living. The excellent reproducibility intra-observer, the good correlation with the EN and the evolution of most of the studied items attest that it is a suitable way to evaluate the functional discomfort in the TOS.