How would I correct this sentence if it is a fused sentence:

Question

The creature sat upright and tugged at the shackles binding his ankles, Frakenstein uttered a piercing scream

The creature sat upright and tugged at the shackles binding his ankles, and uttered a piercing scream

is that what you wanted?

The creature sat upright and tugged at the shackles binding his ankles. Frankenstein uttered a piercing scream.

The fused sentence is after "ankles" in the original.

=)