Feedback on "Gender Specific" knees??

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check out the Signature knee by Biomet. MRI technology is not unique to Biomet, but clinically, the Vanguard knee(particulary our poly) is second to none. And as far as gender specific knees go, Zimmer did a masterful job of covering up a manufacturing error when the developed smaller knees. The bottom line is though, the Vanguard knee still offers more sizes of femurs and tibias than the gender specific knee. So, having more size options makes it easier for us to match patient sizes than it is for them. Gender specific is more limiting to a patient than most other companies....
 






Anonymous said:
they are the only company with a single radius design, it is patented. The only thing even close is the biomet vanguard which is technically a multi radius knee but it the transition between between radii is very tight. True there are no documented papers on x3's long term data but it is coming. It's been out since 2003 and the simulator and retieval data is encouraging
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sorry, the Wright Medical Medial Pivot is a single radius from 0 to 90 degrees.
 









I can tell you that the cutting jigs for these suck which is why we still use the natural knee. My doc has been in practice since 1990 and we yet had to revise any of them do to wear. Its old tech but it works. Now 99% of it is the surgeon. But as these custom cutting jigs get more accurate and it makes results repeatable you definitely see everyone going to these.

I have heard bad things about X3 poly in the stryker knees. I really like the triathalon though. Also the journey looks good on paper. We did try one and the patient is doing very well ROM 0 degrees to 135 and very stable and loves it. He climbs ladders all day.

If Your Mom is still active shoot for a triathalon, journey, or rotating platform. She will be more satified with a new design. But if not shoot for simple knee. The jigs keep things simple and keep the surgeons from going into Intramedullary canal. So less swelling and faster recovery.

Did anyone talk about a partial?

Also check out Conformis web site. NEWEST TECH BUT SCARY.
 



Gender knees are marketing hype. They all work well, if your mom feels good about getting a gender knee then get but pick your surgeon carefully. Ask the zimmer rep who does the best knee, he should know for your area.
 












The Biomet Signature with Epoly combo post hit the nail on the head. Word on the street is, Zimmer is coming out with a Gay Knee too, the surgeon uses a posterior approach, and the patellas are padded! ssssssSuper marketing!
 



swedish registry has the vangaurd knee at a whopping 4% revision rate at 2 yrs!!!!! great knee girls. oh, and by the way, your oxford uni isn't looking real good either!!!
 






I don't know about gender specific. But, I just had my knee replaced. My doctor had me do a MRI, then sent it to Biomet, who custom made my knee, to fit me. My knee is: Make-Biomet, Model-Vangaurd.
 



Anonymous said:
What's the beef with marketing? When a clinical issue can be resolved AND a product can be differentiated in a sea of noise at the same time, I call that a wonderful moment. Females invariably (but not exclusively) have a narrower M/L than men and Zimmer got there first.

For ONCE, I might add.
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Thats not true. They simply solved a problem w their m/l and a/p dimensions. In doing so, they labeled it for marketing purposes. Compare these dimensions with other competitor knees and get back to us.
 






Anonymous said:
zimmer was citing a paper by Dr. Kirby Hitt written for the stryker triathlon knee which described a need for more anthropometric sizing options to better suit certain patient populations including women. This was the main support piece for the gender knee. Unfortunately for Zimmer, Stryker sued and Zimmer can no longer use that paper as a reference. Excellent marketing though on Zimmer's behalf. There is in fact two key differences between the Triathlon knee and the other knees on the market and they are the Triathlon's unique single radius design as opposed to the competition's variable radius knees. This design feature promotes soft tissue guided motion and makes for a more natural feeling knee and is in part why the Triathlon is the quickest growin knee on the market. The second design feature id stryker's X3 polyethlene bearing surface which shows superior wear resistance to all competitive poly's on the market and provides for the potential of a longer lasting implant. the most important factor would be the surgeon implanting the knee, despite the implant design, a poorly placed implant will function poorly. Your mom's best bet is to find a skilled surgeon who uses stryker.
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Go place a triathlon template over an lps template and please report your "single radius" findings.
 



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