To provide further clarity on the information exchange, here is an email from Clavel a week before this.
Quote:
Dear Andrew,
Please find Dr. Clavel's comments on your e-mails below:
"We have seen a couple of cases of subsidence on osteopenic patients. This may not have been the experience of other surgeons.
We could still perform the surgery in July if we use the Activ-L disc, since
with that disc we are not chiselling.
If he wishes that we use the M6L, he should follow an at least 6 month
treatment to improve his bone calcium stock. Then have a new dexa scan.
L5-S1 is to be fused due to the high sacral slope and pelvic incidence."
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So, there is disagreement about the chiseling as well as sacral slope(pelvic incidence).
It seems the sacral slope is becoming more of an issue now on the radar of ADR neuros. I wonder why.
I was told it was stress on the implant over the lifetime of the implant. Sheer forces present at L5/S1 that are not present at discs above that.
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Weightlifter since 12 years old, now mid-40's and figuring out this wasn't such a good idea.
Chronic back pain started in 2010 while shrugging weights that a 40 yr. old shouldn't even try.
MRI in 2012 showing L4/L5, L5/S1 herniations and L2/L3 bulge.
L5/S1 taking on new shape, chronic sciatica, etc.
DEXA bone scan performed 5/7/14 showing mild osteopenia.
Surgery performed July 9th, 2014, Dr Clavel, hybrid three level lumbar.
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