That means you should consider any surgery on you as major. Because if you cant live with the condition, it needs to be fixed. If the problem is only annoying then nonsurgical measures should be all you need. Talk it over with your foot and your doctor if surgery is being considered. Have surgery only if it is necessary.
All surgery can have complications.
Actually, complications from neuroma surgery are rare when an experienced surgeon does the procedure. Still the there is a small chance that numbness, infection, prolonged postoperative pain and even a regrowth of the neuroma can occur. If surgery is needed I recommend against general anesthesia. Today there is an excellent anesthesia technique involving sedation and local anesthesia. The combo produces a gentler experience and is safer than general anesthesia.