الفهرس 
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Abstract
Percutaneous tranluminal angioplasty(PTA) and other methods of percutaneous revascularization have become established as effective therapy for selected patients with peripheral occlusive diseases.
Endovascular procedeures is the treatment of choice for patients with less advanced occlusive lesions, Should be used first in situations where surgical techniques and endovascular therapy give equivalent short-term and long-term symptomatic improvement Recommended endovascular techniques used to treat CLI include Balloon angioplasty (PTA) & PTA and stent.
Factor Affecting Long-Terms Patency After PTA including stenosis rather than occlusion, short segment disease (localized lesions less than 5 cm in length, with relatively unaffected adjacent segment),
non calcified lesions, concentric stenosis rather than multiple one, large vessel involvement better than small vessel, no coronary or treated coronary disease, no diabetes, normal renal function, non smoker,
claudication rather than rest pain or tissue loss and good run-off (i.e.,
patent vessels distal to treated lesion).
This project aims at recognition of different factors that may be involved in success of endovascular management of critical lower limb ischemia in diabetic patients.
1-Early intervention after good pre-operative evaluation is very important to safe limb of critical ischemia.
2-Preoperative mapping to identify the nature and location of the lesions; Doppler ultrasound and C.T angiography or direct conventional.