Bella,   I'm not sure what your question is. The subject would seem that your question is about Botox, but the rest seems to be more about the surgery.   Botox is quite successful for some Migraineurs, but not all, just as other treatments. You can read some information in Intradermal Botox for Migraine, Headache, Pain Disorders.   I know two people who have had surgery such as you describe. Both say they would not do it again. Both people had relief from the surgery for about the same time as Botox provided them relief, then their Migraines increased again.   It's important to note that both Botox and this surgery are treatments, not cures. Neither eliminate 100% of Migraines. The muscle you refer to does not CAUSE Migraines. Migraine is a genetic neurological disease caused by genetics and overly sensitive neurons in the brain. The muscle may be involved in triggering Migraine attacks, but not causing the disease.   Teri