I had a tummy tuck 2 years ago. My rib cage area always protrudes. Is that normal?

It's a great question. I would recommend reposting your question with photos. Some women have a slightly more protruding rib cage and there is not a surgery that changes this part of your anatomy. If there are other areas of concern, you'll get more helpful answers if the doctors can see your photographs.

Dear SM Kelley,I understand your concern. However, without a proper assessment it would be difficult to determine what is wrong. It is best that you visit your plastic surgeon for further assessment. Only after thorough examination you can get proper recommendations and advice. Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery  
Member, Am. Society of Plastic Surgery

Posting pictures if you can is the best way to get more meaningful answers. Some folks have a more "barrel" shaped chest where there ribs protrude forward. This can become more obvious after tummy tuck with muscle plication. Other possibility is if the upper part was not plicated enough, it can lead to upper abdomen fullness that is much more than the lower abdomen. Best wishes!

Hi and welcome to our forum!
The abdominoplasty procedure involves removal of excess lower abdominal skin and soft tissue as well as tightening of the abdominal musculature. The procedure does not involve the ribs. 
Perhaps, the flattening of the abdomen causes a previous rib protrusion to become more noticeable. 
Sight unseen, it is impossible to provide you with a precise answer. I would seek advice from a board certified plastic surgeon.
Best wishes!