As far as the LAMS is concerned, when assessing grip strength, what is the score for a pt who has normal grip on one side only?
The score is assessed comparing one side to the other.
So, if one side is weaker than the other (but can still grip), you would score this a one (1). If there is no grip on the affected side, it is scored a two (2).
If, however, you mean that the patient has a previous deficit, then you would score the patient with your findings, but make sure to communicate the history of the deficit to the receiving stroke team. Please see a similar Ask MAC on this very topic of previous deficit (here).