I treat many of these ulcers and feel that you should first be evaluated with a functional ultrasound to assess the quality and function of your veins. These scars are usually a result of hemosiderin and melanin.
Can Scars from Stasis Leg Ulcers Be Removed?
Doctor Answers 2
Venous stasis ulcers and scars on the legs from ulcers
Scarring from Stasis Dermatitis
I would personally NOT RECOMMEND doing anything surgical to correct a scar caused by poor circulation. You are DEFINITELY risking further damage to your already compromised situation. Do apply bland emollients and avoid topical antibiotics but please, nothing "invasive". Don't forget your support stockings during the day!