Is it helpful to undergo an operation for hallux valgus?

If you have pain: Then yes helpful. I, personally don't advocate corrective foot surgery for cosmetic purposes.

It Can Be...: If you have pain from this deformity, especially if it is keeping you from doing the activities that you want to, then, yes... Have it corrected. If it is painless, there is really no reason to correct it except for in certain circumstances. See a podiatrist.

Can be...: Surgery should be considered if you have exhausted your conservative options. Surgical management of hallux valgus varies greatly on the severity of the deformity, the general health of the patient, and on the surgeon’s training and experience.