| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is the thecal sac | 0.69 | 0.1 | 7507 | 63 |
| what is the thecal sac lumbar area | 1.14 | 0.7 | 6854 | 7 |
| what is the thecal sac in the neck | 1.38 | 0.8 | 8300 | 5 |
| what is the thecal sac of the spine | 0.17 | 0.2 | 3433 | 100 |
| what is the thecal sac in the lumbar spine | 0.4 | 0.9 | 4409 | 97 |
| anterior thecal sac | 1.96 | 0.5 | 6509 | 60 |
| effacement of the thecal sac | 0.88 | 0.6 | 415 | 6 |
| compression of thecal sac | 0.89 | 0.2 | 1894 | 68 |
| lumbar thecal sac | 0.84 | 0.7 | 8444 | 6 |
| indenting the thecal sac | 0.86 | 0.5 | 58 | 85 |
| effacement of the ventral thecal sac | 1.58 | 0.3 | 8942 | 26 |
| thecal sac lumbar spine | 0.34 | 0.2 | 8145 | 57 |
| thecal sac in the spine | 0.63 | 0.1 | 9174 | 77 |
| is the sacrum part of the lumbar | 0.06 | 0.4 | 2042 | 21 |
