Re: bilateral calcaneus fractures
That is a lot of medicines.
The ibuprofen is to reduce pain and swelling. The aspirin might be for pain or might be intended to prevent blood clots. Blood clots are a legitimate concern with a serious foot injury, so don't stop taking the aspirin without your surgeon's permission.
The tramadol and co-codamol are both pain medications. You might not need that much, however. If you currently aren't in much pain, you could try reducing the dosage just a little and see what happens.
The other three drugs are all to treat side effects of the pain medicines: sienna to prevent the narcotics from causing constipation, prochlorperazine maleate for nausea, and (I assume) omeprazole to make sure that all the ibuprofen and aspirin doesn't cause you to get an ulcer.
As for addiction, it's not terribly likely. There's a difference between addiction and dependency. Dependency just means that if you abruptly quit all your medicines, you would have withdrawl symptoms. That will probably happen. However, if you reduce the pain medicines gradually as you heal, rather than quitting all at once, dependency shouldn't be a problem. Addiction means craving the side effects, or using the drug for entertainment. Despite what the media claims, it's very rare for someone to become actually addicted to a painkiller they were legitimately prescribed for a serious injury.