Tim, I've seen Nuvasiv's MaXcess system demonstrated at a surgeon's conference... very impressive access created. It will be interesting to see if retrieval of a keeled device through an extreme or translateral procedure will be or has already been successful. Again, as these aproaches are tried and succeed... a handful of cases done by other surgeons does not make it a slam dunk for others. If you need revision surgery, you are in rare air.
Mark
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