Hello. I am new to this support group, but have been diagnosed with APAS for the past 12 years. I had 3 strokes, a bi-femoral bypass and graft for my legs, and a small stent put in for my upper superior mescenteric artery. Now I am starting to experience my legs just giving out on me for no reason that I can feel. Does anyone know what this is all about? Thank you for any help.