Hardened Tissue After Tummy Tuck

The hardness in the area beneath your umbilicus is probably
related to fat necrosis and scar formation.  This phenomena occurs because of compromised blood flow to
the involved area.  In the initial
phases of wound healing some remodeling can be expected, but after 12-18 months
these changes are more or less permanent without secondary surgery. 

                  It’s
hard to make a recommendation without performing a physical exam.   Depending on the results of this
exam a variety of options may be available.  In some cases revision abdominoplasty may be necessary,
while in other cases surgery may not be an option.

                   If
you’re concerned about this problem, consultation with a board certified
plastic surgeon is appropriate. 
This surgeon should be able to make an appropriate recommendation.

The hardness you are experiencing is normal a few months after surgery but not 3 years. I would recommend you contact your surgeon and be evaluated to be sure that nothing is wrong. Best of luck.