Reliability, validity and discriminant ability of a robotic device for finger training in patients with subacute stroke.

The study only examined subacute stroke patients (within 6 months of onset) with mild-to-moderate impairment, so results may not apply to chronic stroke patients or those with severe hand paralysis. Spasticity levels in the sample were generally low and had little variation, which may have made it harder to detect reliable differences in the spasticity measures. The study did not assess responsiveness, meaning it is unknown how well these measures capture change over the course of a treatment program. Data was missing for some participants due to technical issues or clinical reasons, reducing the sample size for specific analyses.

The study was conducted by the Fondazione Don Carlo Gnocchi. The device (Amadeo) is manufactured by Tyromotion. The text does not explicitly state a funding relationship between the researchers and the manufacturer, nor does it declare conflicts of interest, though the authors are affiliated with the rehabilitation centers using the device.

Do not assume the robotic spasticity scores are valid simply because the device is precise. The study found poor reliability for spasticity measures and no correlation with clinical ratings, so these specific outputs should not replace your clinical assessment of tone.