Spetzler-Martin Score

The global unit selector only affects unanswered questions
1.Size of Lesion?
2.Location of Lesion?
3.Pattern of Venous Drainage?
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1. Size of Lesion?

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About this Calculator

The Spetzler-Martin grading system is used to estimate the risk of surgical resection of an arteriovenous malformation. The three elements are size, venous drainage, and location. Higher grades are associated with greater surgical morbidity and mortality.


Spetzler RF, Martin NA.

A proposed grading system for arteriovenous malformations.

Journal of Neurosurgery 1986, 65 (4): 476-83

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