Introduction：There are few detailed evaluations of upper extremity function in Japan, especially for cervical spinal cord injury (CSCI). The capabilities of upper extremity test (CUE-T) evaluates upper extremity function, is specialized for CSCI, and is internationally used；however, there are few reports from Japan. This study verified the reliability, validity, and responsiveness of the CUE-T in Japan.Methods：We determined the interrater reliability, internal consistency, weighted kappa coefficient, intraclass correlation coefficient, and Cronbach's α coefficient for acute and chronic CSCI. The correlation coefficient with other evaluations was calculated and validated. Furthermore, the evaluation was performed twice at regular intervals, and the correlation between the change in CUE-T and other evaluations and the sensitivity to change using the standardized response mean (SRM) were verified.Results：The weighted kappa coefficient was 0.61-1.00, intraclass correlation coefficient was ≥0.9, and Cronbach's α coefficient were ≥0.9. The CUE-T and other evaluation methods showed moderate to strong correlations. In addition, the amount of change between CUE-T and the other evaluations were significantly correlated, and the SRM was ≥0.8.Discussion：In Japan, the CUE-T has been suggested to have good reliability, validity, responsiveness, and interpretability as an evaluation of upper extremity function in patients with CSCI. We will continue to verify the interpretability of the CUE-T and consider its dissemination in Japan.

Introduction：There are few detailed evaluations of upper extremity function in Japan, especially for cervical spinal cord injury (CSCI). The capabilities of upper extremity test (CUE-T) evaluates upper extremity function, is specialized for CSCI, and is internationally used；however, there are few reports from Japan. This study verified the reliability, validity, and responsiveness of the CUE-T in Japan.Methods：We determined the interrater reliability, internal consistency, weighted kappa coefficient, intraclass correlation coefficient, and Cronbach's α coefficient for acute and chronic CSCI. The correlation coefficient with other evaluations was calculated and validated. Furthermore, the evaluation was performed twice at regular intervals, and the correlation between the change in CUE-T and other evaluations and the sensitivity to change using the standardized response mean (SRM) were verified.Results：The weighted kappa coefficient was 0.61-1.00, intraclass correlation coefficient was ≥0.9, and Cronbach's α coefficient were ≥0.9. The CUE-T and other evaluation methods showed moderate to strong correlations. In addition, the amount of change between CUE-T and the other evaluations were significantly correlated, and the SRM was ≥0.8.Discussion：In Japan, the CUE-T has been suggested to have good reliability, validity, responsiveness, and interpretability as an evaluation of upper extremity function in patients with CSCI. We will continue to verify the interpretability of the CUE-T and consider its dissemination in Japan.