Efficacy of Occipital Artery–Encephaloduroarteriosynagiosis for Posterior Circulation Ischemia in Moyamoya Disease

OA-EDAS may be a safe and effective indirect revascularization treatment for PCA stenosis associated with MMD, resulting in satisfactory perfusion improvement and minimal surgical morbidity. Its technical simplicity, short operative time, and preservation of native OA flow may render it a valuable alternative to direct OA-PCA bypass.