if scoliosis has been treated (with a brace) it should not worsen after the patient has stopped growing. people can have back problems later in life whether they had scoliosis or not. so it depends on what you mean by "older". if you scoliosis at age 11 it could get worse by age 18 if you were still growing.
can scollosis that has been treated with a brace get worse as you get older?