Extremities/blood supply; Ischemia/therapy; Thrombectomy; Thrombolytic Therapy; Acute Disease; Aged; Algorithms; Angiography; Arterial Occlusive Diseases/surgery; Arterial Occlusive Diseases/therapy; Blood Vessel Prosthesis; Catheterization; Female; Fibrinolytic Agents/administration & dosage; Fibrinolytic Agents/therapeutic use; Follow-Up Studies; Humans; Ischemia/diagnostic imaging; Ischemia/drug therapy; Ischemia/surgery; Male; Patient Selection; Plasminogen Activators/administration & dosage; Plasminogen Activators/therapeutic use; Retrospective Studies; Stents; Thrombectomy/methods; Time Factors; Treatment Outcome; Urokinase-Type Plasminogen Activator/administration & dosage; Urokinase-Type Plasminogen Activator/therapeutic use