[2][3] The Fugl-Meyer Assessment score has been tested several times, and is found to have excellent consistency, responsivity and good accuracy.
[7] In 1975, Axel Fugl-Meyer noted that it is difficult to quantify the efficacy of different rehabilitation strategies because of the lack of a numerical scoring system.
Fugl-Meyer was particularly influenced by the 1951 paper authored by Thomas Twitchell, titled The Restoration of Motor Functioning Following Hemiplegia in Man[8] and observations on post-stroke patients by Signe Brunnstrom.
[9] In the motor scale of Fugl-Meyer assessment, items were generated based on the ontology and stages of stroke recovery described by Twitchell and Brunnstrom respectively.
However, Fugl-Meyer test still holds good, possibly because it follows a hierarchical scoring system based on the level of difficulty in performing the tasks.