How tongue in cheek was this...?
I could not work out whether the script writer was being intetionally funny throughout the picture (as in, say, Bride Of...) or if it was unintentionally funny.
This occurs mostly in relation to Kroghs arm. It's manipulation by its owner, the darts, his retort to Frankenstein at one point - "I'll give you a hand", it being ripped off by the monster etc.
Surely Rathbone was aware of the ridiculousness of it ie his totally over the top 'agitation' resulting in hilarious face-pulling etc...