Average CSAs of the suboccipital musculature
| Muscle | Mean CSA (cm2) | SD |
|---|---|---|
| Rectus capitis posterior minor | 2.36 | 1.20 |
| Rectus capitis posterior major | 5.12 | 1.76 |
| Longus colli/capitis | 1.19 | 0.45 |
| Inferior oblique capitis | 3.73 | 0.54 |
| Semispinalis cervicis/multifidus | 1.48 | 0.45 |
| Semispinalis capitis | 4.04 | 0.61 |
| Splenius capitis | 4.98 | 0.82 |
| Total muscle CSA | 19.70 | 6.80 |
Note:—CSA indicates cross-sectional area.