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M6 Cervical vs ProDisc
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| iSpine Discuss M6 Cervical vs ProDisc in the Main forums forums; So if there are stability issues with multi-levels, why are the surgeons not doing more hybrids, the combination of ... |
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10-28-2009, 02:23 AM
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So if there are stability issues with multi-levels, why are the surgeons not doing more hybrids, the combination of fusions and ADR? That way the top level will have the mobility that seems so necessary to prevent adjacent disc disease, but the fusion below provides stability.
I just found out that the m6 is the only disc on the market that I am not allergic to, so I'm trying to sort out where and how to get it without losing my home.
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DDD Herniated discs C4/5 & 5/6, L3/4, L4/5, L5/S1 Severe compression of spinal cord in two levels All conventional therapy exhausted, including spinal injections, PT, massage, etc. In appeal with Gov't Insurance for Out-of-country coverage for ADR hybrid surgery of above discs. Recently discovered that I am severely allergic to all common metals used in surgical hardware except for Titanium. 
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10-29-2009, 12:53 AM
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Quote:
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C4-5: Mild disc height loss with central annular fissure. Small broad-based left paracentral disc protrusion. Moderate central canal stenosis-the disc protrusion abuts and mildly flattens the left ventral surface of the spinal canal. C5-6: Disc desiccation with mild height loss.Diffuse discosteophyte bulge and uncovertebral joint hypertrophy, moderate central canal stenosis- Severe neuroforaminal stenosis bilaterally, right greater than left.
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10-29-2009, 07:41 AM
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Because it is the only one on the market I've found that does not contain cobalt, chromium or nickel, to which I am highly allergic. It is made of surgical grade titanium, and then covered with 100% titanium.
I had a blood test at Rush University with gave me the list of different metals to which I am intolerant. I knew I had a problem with nickel because of skin allergies with jewellery my whole life, but this test confirmed that I have a much broader problem than just nickel. Titanium is the only metal that I can safely tolerate. It literally saved my life by preventing me from having to go through a five level revision surgery.
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DDD Herniated discs C4/5 & 5/6, L3/4, L4/5, L5/S1 Severe compression of spinal cord in two levels All conventional therapy exhausted, including spinal injections, PT, massage, etc. In appeal with Gov't Insurance for Out-of-country coverage for ADR hybrid surgery of above discs. Recently discovered that I am severely allergic to all common metals used in surgical hardware except for Titanium.
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10-29-2009, 03:35 PM
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shock absorption....
^ I wonder what my body is allergic to also should I get a test done?
Am I wrong for thinking the M6 would be more secure b/c of the extra keels and I will need the shock absorption to start off my 30's?  
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C4-5: Mild disc height loss with central annular fissure. Small broad-based left paracentral disc protrusion. Moderate central canal stenosis-the disc protrusion abuts and mildly flattens the left ventral surface of the spinal canal. C5-6: Disc desiccation with mild height loss.Diffuse discosteophyte bulge and uncovertebral joint hypertrophy, moderate central canal stenosis- Severe neuroforaminal stenosis bilaterally, right greater than left.
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10-29-2009, 06:51 PM
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Do you have any symptoms of metal allergies, or other allergies for that matter? I can't wear most jewellery, and I have recently developed a multitude of food and drug allergies. So when someone on a forum suggested that I have this metal allergy test done, I decided it was money well spent.
The surgeon who was supposed to put in several Maverick discs last week had a change of heart, and now I have to figure out how to get the M6 without losing everything I own. The surgery last week would have been covered by insurance. Now...I really don't know what is going to happen. It isn't available here yet because of regulations. If you feel that you want to have the allergy testing, just as insurance, you can PM me for details, or just contact Rush University in Chicago. I have heard of one other patient who had no previous symptoms and still had reactions to an implant. But it isn't hard and fast, just another person's story. My surgeon did tell me about a conference he was at last May, and there were reports of four spine patients who had revision surgery because of metal allergies. That's why he was so careful about my nickel allergy. While the test isn't cheap, it certainly beat the alternative. Now I have no other options; I have to have the M6, no matter what the pros and cons are. I am considering asking for fusion at the bottom level, then the two artificial discs above that in the lumbar, to reduce the excess movement that has been brought up. But I guess the final decision is the in the hands of the surgeon, whoever that may be.
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DDD Herniated discs C4/5 & 5/6, L3/4, L4/5, L5/S1 Severe compression of spinal cord in two levels All conventional therapy exhausted, including spinal injections, PT, massage, etc. In appeal with Gov't Insurance for Out-of-country coverage for ADR hybrid surgery of above discs. Recently discovered that I am severely allergic to all common metals used in surgical hardware except for Titanium. Last edited by Katie; 10-29-2009 at 06:53 PM.
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10-29-2009, 08:25 PM
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Katie, Bryan and Prestige LP are titanium. Newer prestige is titanium and ceramic.
JKDE302, more secure only matters if less secure is a problem. I don't think that more smaller keels are necessarily more secure... it will likely depend upon how much surface area interfaces with the bone. We talk about primary and secondary fixation. Primary fixation is the 'stay puttedness' of the device upon implantation. Secondary fixation occurs after osteointegration of bone and the coating on the prosthesis. After osteointegration, migration is unlikely even in the 'no keel, no cleats' design (PCM). PCM has a double whammy of poor primary fixation AND the large radius joint surface that does not keep everything centered. I believe that the clinical trials were halted because of migration. (This is what I was told by a surgeon in the trial. I do not have any documentation about this.... I consider it a rumor, but because of the source, I trust it.) Migration or expulsion of the prosthesis has been seen in all devices, but I've never seen it ever, ever, ever; with properly implanted devices. I'd rather have a well placed PCM than a poorly placed ProDisc or other device... even though the device factors should be discussed, understood and considered... IMHO, the choice of surgeon is far more important. Mark
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1997 MVA 2000 L4-5 Microdiscectomy/laminotomy 2001 L5-S1 Micro-d/lami 2002 L4-S1 Charite' ADR - SUCCESS! 2009 C3-C4, C5-C6-C7, T1-T2 ProDisc-C Nova Summer 2009, more bad thoracic discs! Life After Surgery Website President: Global Patient Network, Inc. Founder: www.iSpine.org
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10-30-2009, 03:28 AM
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I could not get accurate, specific details on the purity of the titanium in either of these discs.
Can you tell me EXACTLY what titanium alloy is used in them? And are they covered with a 100% titanium spray?
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DDD Herniated discs C4/5 & 5/6, L3/4, L4/5, L5/S1 Severe compression of spinal cord in two levels All conventional therapy exhausted, including spinal injections, PT, massage, etc. In appeal with Gov't Insurance for Out-of-country coverage for ADR hybrid surgery of above discs. Recently discovered that I am severely allergic to all common metals used in surgical hardware except for Titanium.
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