[Purpose] The Shoulder36 (V 1. 3) is a regional questionnaire in Japan that has not been
validated as a functional evaluation of the shoulder via a thorough comparison with other
questionnaires (e.g., QuickDASH). The purpose of this study was to test the reliability,
validity, and responsiveness of the Shoulder36 (V 1. 3). [Subjects and Methods] A series
of 46 patients with upper extremity disorders completed the Shoulder36 (V 1. 3) and the
QuickDASH Japanese version (QuickDASH-JSSH). The reliability of the Shoulder36 was
assessed for consistency and validity. The correlation coefficients between the Shoulder36
(V 1. 3) and the QuickDASH-JSSH were obtained. [Results] The total of the Cronbach’s alpha
coefficients for the Shoulder36 (V 1. 3) was 0.98. The intraclass correlation coefficients
for the six domains of the Shoulder36 (V 1. 3) were similarly high, ranging from 0.81 to
0.94. The correlations between the six domains of the Shoulder36 (V 1. 3) and the three
domains of the QuickDASH subscales ranged from −0.43 to −0.78. [Conclusion] The Shoulder36
(V 1. 3) was able to evaluate the relationship between activities of daily living and
shoulder joint function with the same degree of accuracy but in more detail than
QuickDASH-JSSH. Therefore, it should prove to be a valuable asset in physiotherapy plans
and have multiple research applications.