Reliability of the Italian Version of the Fugl-Meyer Upper Extremity Scale Administered Remotely

<b>Background/Objectives:</b> Despite the increase in home-based rehabilitation, outcome measures for telerehabilitation are still underdeveloped. The Fugl-Meyer Assessment (FMA) is one of the most widely used tools for evaluating post-stroke motor deficits, with the upper extremity component (FMA-UE) recommended for assessing motor deficits of the arm. This study aims to examine the intrarater and interrater reliability of the Italian version of the FMA-UE, administered remotely via video conferencing during a robotic telerehabilitation program. <b>Methods:</b> Twenty stroke patients participated and underwent 20 sessions of remote upper limb rehabilitation with a robotic device. In-person evaluations were conducted before (T0) and after (T1) treatment, with additional remote assessments throughout. The study evaluated both intrarater and interrater reliability using Intraclass Correlation Coefficients (ICC) and Bland-Altman plots, classifying reliability as excellent for scores above 0.90. <b>Results:</b> Bland-Altman analysis showed no systematic variance for both intrarater and interrater reliability of the FMA-UE scale. Excellent reliability was found with intrarater ICC = 0.972 and interrater ICC = 0.981. Sections A and C of the FMA-UE showed excellent intrarater reliability, while sections B and D had satisfactory results. Both intrarater and interrater reliability analysis of the total score of the FMA-UE scale also showed strong agreement with Cohen's Kappa values above 0.70. <b>Conclusions:</b> The findings suggest that the remote administration of the FMA-UE scale is a reliable tool for assessing upper limb motor function in stroke patients, supporting its use in telerehabilitation settings.