WHAT THIS PAPER ADDSThis prospective study investigated a group of patients with chronic limb threatening ischaemia due to complex multilevel arterial disease treated homogenously using common femoral endarterectomy combined with inflow and outflow endovascular treatment. This option should provide a great benefit for a subset of high risk patients with an extensive disease pattern as it is considered safe with accepted patency rates despite the need for secondary interventions. Predictors of primary patency loss and degree of limb threat should guide the decision of whether to stage the procedure or perform a simultaneous inflow and outflow complete recanalisation.Objective: To assess mid term outcomes of common femoral endarterectomy combined with an inflow and outflow endovascular revascularisation procedure in patients with chronic limb threatening ischaemia (CLTI). Methods: This was a prospective study. All patients who, for the first time, underwent planned one stage hybrid common femoral artery (CFA) endarterectomy combined with an inflow and/or outflow endovascular revascularisation procedure to achieve limb salvage in patients with CLTI due to multilevel disease were included between January 2015 and May 2017. Demographics, and clinical and lesion characteristics for each patient were reported. The primary outcome was primary patency. Secondary outcomes were technical success, peri-operative morbidity and mortality, assisted primary patency, secondary patency, clinically driven target lesion revascularisation and amputation free survival. Results: Three groups were created according to the endovascular treatment zone: group 1 (inflow, n ¼ 60); group 2 (outflow, n ¼ 46); and group 3 (combined inflow and outflow, n ¼ 53). CFA endarterectomy was a fixed step in all cases. The overall technical success was 98%. The peri-operative complication rate was 14% and the mortality rate was 2%. Patients in group 3 demonstrated a significantly lower primary patency rate (53.9% AE 7.1%; p < .001) at 24 months but improved secondary patency rate of (94.0% AE 3.4%). Based on the outcomes of the Cox regression multivariable analysis, lesion length (hazard ratio [HR] 1.10, 95% confidence interval [CI] 1.06e1.14; p < .001), chronic total occlusion (CTO) (HR 0.50, 95% CI 0.25e0.98; p ¼ .046), peripheral artery calcium scoring system (PACSS) grade 4 (HR 2.44, 95% CI 1.27e4.68; p ¼ .008), incomplete revascularisation (HR 3.32, 95% CI 1.64e6.73; p ¼ .001), and dyslipidaemia (HR 0.50, 95% CI 0.27e0.93; p ¼ .031) were the only significant independent predictors of loss of primary patency. Conclusion: Common femoral endarterectomy combined with an inflow and outflow endovascular revascularisation procedure in patients with CLTI is safe, with acceptable patency rates, despite the need for secondary interventions. Dyslipidaemia, lesion length, CTO, PACSS grade 4, and incomplete revascularisation are independent predictors of primary patency loss. The current study analysis supports the recommendation to stage the procedure based on ...