motor assessment for CP?

Hello,
could you please let me know what is the best measurement tool to assess the hand function in CP ( maily hemiplegics) specifically grasp?

many thanks

- if the patient is CP, it has been suggested in another post that you can use GMFCS .. that is " Gross Motor Function Classification System for cerebral palsy "

Also have a lok over this article.

Diagnostic assessment of the child with cerebral palsy: report
of the Quality Standards Subcommittee of the American Academy of Neurology and the Practice Committee of the Child Neurology Society.