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The rate of percutaneous endovascular treatment is increasing because of the high incidence of peripheral artery disease and improved endovascular techniques. Therapeutic decisions in patients with intermittent claudication are based on the patient's functional impairment, specifically in the Fontaine II class. Endovascular or surgical revascularization versus optimal medical therapy with supervised exercise training is a very frequent dilemma in clinical practice. Patient surveillance and follow up after angiointerventions requires a rational approach in the era of new technical advancements in the 21st century. The aim of this retrospective study was to analyze changes in ankle brachial index (ABI) values and walking distance changes as functional status parameters after successful angiointerventions in the observational period: before intervention, after the procedure, and in follow-up. Increased ABI values and walking distance were associated with successful revascularization in the group of patients who did not respond to the initial standard medical treatment in the 6-month period. Comorbidities had no influences on data evaluated in the study. ABI values on the contralateral leg revealed a positive correlation with the incremental ABI values in the leg where revascularization was successfully performed. Significant increase in walking distance after percutaneous revascularization and significantly greater ABI values in follow-up confirmed the importance of both parameters that reflect successful angiographic findings after percutaneous transluminal angioplasty (PTA). Both parameters were consistent with successful revascularization and improved functional status in the follow-up period. Walking distance deserves to be reevaluated in the assessment of functional status in patients after successful percutaneous angiointerventional revascularization. It should not be neglected as a valuable parameter in estimating functional status after PTA. [ABSTRACT FROM AUTHOR]