Yes, You can get hernias from an abdominoplasty although it is unlikely. When dissecting the fat and skin off the anterior abdominal wall the anterior abdominal fascia can be violated leading to a post operative hernia. This would only occur if it was not recognized by the surgeon. An experienced surgeon knows what plane to be dissecting in and thus this should not occur.
Hernias occur when there is a weak area or even a hole in the fascia or tissue surrounding the muscle. This allows the abdominal contents to move through the fascia and a sack is created. When an abdominoplasty or tummy tuck is performed, routinely the midline fascia is repaired which can prevent ventral hernias from occurring. If other defects are noticed they are usually repaired. So not only do tummy tucks not cause hernias but they can prevent them as well.