The keel cut is only relevant if causes a problem. It can cause problems but only if the surgeon uses improper technique. If the surgeon uses improper technique... you are with the wrong surgeon no matter which device you are using.
My issue with the Mobi-C is the excessive mobility of the device. With both lumbar and cervical ADR, I have seen many cases in which the highly mobile devices are problematic, ESPECIALLY in multi-level cases.
I am more than 5 years post-op from a 4-level ProDisc-C and still have 100% normal range of motion. (I do have ongoing problems with my t-spine, but these are apparently unrelated to my lumbar (2002) and cervical (2009) surgeries.
Call me if you wish... phone number on the GPN website linked below. 8am-6pm California time only please.
Mark
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