Research Article
Fluoroscopy-Guided Blockade of the Greater Occipital Nerve in Cadavers: A Comparison of Spread and Nerve Involvement for Different Injectate Volumes
Table 1
Comparison of dye staining between suboccipital compartment block with 2, 3.5, and 5 ml of methylene blue.
| | Anatomical structures | 2 ml dye (n = 10) | 3.5 ml dye (n = 10) | 5 ml dye (n = 10) |
| | Nerves | | Suboccipital nerve | 10 (100%) | 10 (100%) | 10 (100%) | | GON | 10 (100%) | 10 (100%) | 10 (100%) | | Third occipital nerve | 7 (70%) | 10 (100%) | 10 (100%) | | LON | 0 | 10 (100%) | 10 (100%) |
| | Muscles | | Obliquus capitis inferior | 10 (100%) | 10 (100%) | 10 (100%) | | Rectus capitis major | 10 (100%) | 10 (100%) | 10 (100%) | | Rectus capitis minor | 10 (100%) | 10 (100%) | 10 (100%) | | Obliquus capitis superior | 10 (100%) | 10 (100%) | 10 (100%) | | Semispinalis capitis | 10 (100%) | 10 (100%) | 10 (100%) | | Longissimus capitis | 5 (50%) | 10 (100%) | 10 (100%) | | Splenius capitis | 1 (10%) | 10 (100%) | 10 (100%) | | Sternocleidomastoid (mastoid tip) | 0 | 10 (100%) | 10 (100%) | | Trapezius | 0 | 2 (20%) | 6 (60%) |
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