What are some of the complications for women who undergone foot bunion operation?

Short list. Bunion surgery has a good probability of success if the correct procedure and patient are chosen. Possible complications could include infection, stiffness, scarring, problems with bone healing or fixation devices, poor cosmetic result or toe alignment, etc. Most poor results occur with patients who don't follow proper post-op care instructions. Be a good patient and pick a good surgeon.
See below. Infection, prlonged swelling or pain, under or over correction, delayed healing and limitation of range of motion are some of the most common ones.
Many possible. Complications may include: pain, swelling, numbness, infection, delayed healing, non-healing, blood clot, pulmonary embolism, stiffness, altered ambulation, hardware failure, scar overgrowth and possible recurrence of deformity.