Onyx Embolization Before The Surgical Treatment Of Grade-III Spetzler-Martin Brain Arteriovenous Malformations: Single-Center Experience and Technical Nuances

grade-III Spetzler-Martin (SM) brain arteriovenous malformations (AVMs) are a specific set of AVMs with a high variability in terms of site, size, angioarchitecture, flow dynamics and involvement of eloquent areas. Surgery preceded by pre-operative embolization has been reported as a useful treatment option for these lesions. The aim of this study is to report outcomes and personal experience of combined pre-operative Onyx embolization and surgical resection on a consecutive series of grade-III brain AVMs.