Could Dr. Shaw have ran around like that immediatley after the C-section to get the Alien out in Prometheus?

Wouldn't the muscles that had just been sliced through and stapled back together inhibit her movements? She slid right out of the med-pod, and ran around. Wouldn't this have physically impossible to use the muscles that had been cut? I know she took pain killers but would deaden the pain. This is different than being able to use those muscles to that extent.