Hello Customer (name blocked for privacy):
There is no hard and fast rule--it really depends on the state of your health, the purpose of the surgeries, and how your doctor feels about having them within two weeks of each other. My daughter has had 39 surgeries due to inadequate airway, and she has had more than one in the same week on more than one occasion. So, having two surgeries, two weeks apart, isn't unheard of. As long as your doctor feels you're a good candidate for this or that they are both warranted in that time frame.
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Lori