Robotic Rigor: Validity of the Kinarm End-Point Robot Visually Guided Reaching Test in Multiple Sclerosis.
Nick W Bray, Syed Z Raza, Joselyn Romero Avila and 2 others
PMID 39822195WHAT IT FOUND
Robotic movement planning metrics correlated moderately with standard dexterity tests, and reaction time distinguished those reporting hand problems.
Movement correction metrics showed no significant relationship with either clinical measure, suggesting they may assess distinct aspects of motor function.
Key findings
01Kinarm visually guided reaching task scores and movement planning variables (reaction time, initial direction angle) showed moderate correlations with the Nine-Hole Peg Test, while movement correction variables did not.
02Dominant hand reaction time was the only objective measure that significantly differed between participants who self-reported hand problems and those who did not.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The study had a small sample size (n=42) and was cross-sectional, limiting generalizability. Criterion validity was assessed against a single subjective question rather than a gold-standard clinical measure. The sample consisted of individuals with stable disease and no significant arthritic or movement limitations, so findings may not apply to those with more advanced disability or comorbidities. Moderate correlations suggest the Kinarm and 9HPT measure overlapping but distinct aspects of motor performance.
Declared interests
The authors declare no competing interests.
The easy way to misread this
Do not assume the Kinarm VGR test is a superior replacement for the 9HPT. The correlation was only moderate, and the test did not show significant differences in overall task score or movement correction metrics between those with and without reported hand problems. It appears to offer additional insight into movement planning rather than a complete alternative assessment.