Spetzler-Martin arteriovenous malformation grading system

A.Prof Frank Gaillard et al.

The Spetzler-Martin AVM grading system allocates points for various features of intracranial arteriovenous malformations to give a grade between 1 and 5. Grade 6 is used to describe inoperable lesions. The score correlates with operative outcome.

Grading

  • size of nidus
    • small (<3cm) = 1
    • medium (3-6cm) = 2
    • large (> 6cm) = 3
  • eloquence of adjacent brain
    • non-eloquent = 0
    • eloquent = 1
  • venous drainage
    • superficial only = 0
    • deep = 1
Eloquence of adjacent brain
  • eloquent brain
    • sensorimotor, language, visual cortex, hypothalamus, thalamus, brain stem, cerebellar nuclei, or regions immediately adjacent to these structures
  • non-eloquent brain
    • frontal and temporal lobe, cerebellar hemispheres
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Article information

rID: 2066
Tags: vascular, refs
Synonyms or Alternate Spellings:
  • Spetzler AVM grading system
  • Spetzler-Martin arteriovenous malformation grading system
  • Spetzler-Martin grading system for arteriovenous malformation

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Cases and figures

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    Case 1: grade 2
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    Case 2: grade 3
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    Case 3: grade 4
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    Case 4: grade 5
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