Can injections remove scar tissue from muscle repair after tummy tuck 3.5 years later? Possibly shockwave therapy?

No pregnancies, still can't stand straight, feel crunched/abs seize up in the middle, at appt Dr said mesh would have dissolved, no mention in operative report, another Dr suggested it be scraped off? can steroid injections/anything else dissolve scar tissue? massages, physio, stretching did nothing, strong downward pull at bb, feels tethered down to muscle wall, can't stand/walk for long periods bc of tight midline, had small separation, little skin, muscle burns under bb, thank-you.