Originally posted by susancook
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I don't know of any research yet, but DLIFs and OLIFs are similar to XLIFs. I think there are probably a lot of reasons I don't know about, but two I can think of immediately are 1) no risk of retrograde ejaculation for men and 2) approach from the side means that it's easier to access the spine, especially in heavier people.
--Linda
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