I don't understand what SAS is. I also can't find any info as to their efficacy at L5S1. Where did you find that info?
thanks for reponding.
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1/2006 DDD L5/S1
Prodisc St. Mary's 12/2006 not diagnosed properly pre-op and now have DDD L4/L5, facet calcification L5-S1/L4-L5, mild scoliosis and left knee pain. DDD: C3 through C6
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