How to treat this wound on incision after tummy tuck? (photo)

Hello. Great question. I am sorry for your post op difficulties. Wound dehiscence is not uncommon post op. I will suggest following your surgeon's post op instructions. Every surgeon has different post op protocols.

Dear earroyo,this type of wound is not uncommon after tummy tuck. It is usually caused by poor blood flow. I would suggest you to consult your plastic surgeon, follow your surgeon's instructions and keep your wound clean and covered. It can take few weeks or months for wound to fully heal. Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

You will need to contact your surgeon's office for instructions on how to care for your wound. Your surgeon or her/his medical staff should demonstrate how you are to care for your incisions and then you can do it yourself while they observe to make sure you feel comfortable. These small wounds will heal from the inside out, meaning the deepest part heals first and will continue to the surface of the skin.

Partial wound dehiscence is not that uncommon after body contouring surgery. Wound care is based on amount of drainage and wound cultures. Culture-specific antibiotics and protecting the surrounding skinflint moisture are key. Aside from packing, I find negative pressure wound therapy (KCI-wound VAC) may expedite healing. The good news is that with time, this will heal, so hang in there. 

My recommendation is to follow up with your plastic surgeon or his or her nurse to get help with wound care.  The suprapubic area is a common place to get some soft tissue breakdown after a tummy tuck.  It usually happens because of poor blood supply to the area right after surgery.  Often, this area heals very well with some wound care and time.  

Sorry to hear about your wound, earroyo.
Please follow-up with your reputable and board-certified plastic surgeon regarding proper wound care as each doctor follows his  own protocol when it comes to wound care.
Good luck!

Your surgeon should be the one giving wound care advice. Otherwise, seek an in person second opinion for this.