Attune info

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Attunes has more femurs and symmetric tibia sizes. There is a trochlear resess cut in the CR femur and it has a jig thats adjustable. The femur has a J-Curve that changes throughout the range of sizes to address mid-flexion instability. Currently is are no micro or macro implant sizes. No IM tibia cutter until Attune revision launches. There are plastic femoral trials with lug hole drill locators and an adjustable stylus that slips into the tibia cut slot.
 












Anonymous said:
See the attune sagital geometry. That's the point
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Ok sooo the sagital geometry has a "gradius" of curvature i.e. decreasing radius. Am I on the Styker board or something. If you think that the j curve/ circle or whatever the hell you wanna call it, compensates for a knee that is not balanced in flexion then good luck. Please refer the revisions to my territory.....

I do believe the number one reason for early revision is instability. The implant ain't gonna fix that! You gotta put it in right
 






Anonymous said:
Ok sooo the sagital geometry has a "gradius" of curvature i.e. decreasing radius. Am I on the Styker board or something. If you think that the j curve/ circle or whatever the hell you wanna call it, compensates for a knee that is not balanced in flexion then good luck. Please refer the revisions to my territory.....

I do believe the number one reason for early revision is instability. The implant ain't gonna fix that! You gotta put it in right
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I think you all have gotten off track. The post at the top said that one of "fixes" the attune addresses is mid flexion instability, by changing the sagital geometry seen in the sigma. You are correct, an unstable knee will not be "fixed" w a single radius or something close to it (ie Vanguard or Attune).
 






Anonymous said:
I think you all have gotten off track. The post at the top said that one of "fixes" the attune addresses is mid flexion instability, by changing the sagital geometry seen in the sigma. You are correct, an unstable knee will not be "fixed" w a single radius or something close to it (ie Vanguard or Attune).
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Ok so how does Attune address "fix" mid flexion instability? There are engineering tweeks that make it better in theory but......mid flexion stability is a surgical technique issue predominantly.
 






Yep, definitely need to train surgeons better. I bet more then half of the ASR's wouldn't be as harmful had they been implanted correctly... Slow down and train train train.
 


















Anonymous said:
Yup it's always the surgeons fault!
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Wow not saying its the surgeons "fault" but if you cant balance a knee why are you doing knee surgery. An implant can HELP you do that but it can not by itself create a stable knee. If that were the case I should be able to bag the MCL and rely on the implant to provide a stable knee as an extreme example.
 












Why do some people freak out and say Attune can't help address mid flexion instability. First off let's talk about balancing. This is typically done at extension and 90degs of flexion. This doesn't always address what happens between those two points. Mid flexion instability may be between 30-60 degrees. Proper tension of the PCL may address this but I don't think it's crazy to say that the articular geometry of the Attune helps this. If articular geometry doesn't help performance then why aren't we still using the basically flat tibial inserts of the late 80s early 90s. Part of the problem is that mid flexion instability hasn't been very well defined in the past.
 






Anonymous said:
Why do some people freak out and say Attune can't help address mid flexion instability. First off let's talk about balancing. This is typically done at extension and 90degs of flexion. This doesn't always address what happens between those two points. Mid flexion instability may be between 30-60 degrees. Proper tension of the PCL may address this but I don't think it's crazy to say that the articular geometry of the Attune helps this. If articular geometry doesn't help performance then why aren't we still using the basically flat tibial inserts of the late 80s early 90s. Part of the problem is that mid flexion instability hasn't been very well defined in the past.
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I don't think anyone freaked out and I agree with almost everything you say. I think Attune as well as some other knee designs HELP in mid flexion stability it does NOT compensate for poor balancing technique.

Some people don't retain the PCL who really knows what proper tension of the PCL is anyway? Insall never thought he could "balance" the PCL
 






Anonymous said:
Why do some people freak out and say Attune can't help address mid flexion instability. First off let's talk about balancing. This is typically done at extension and 90degs of flexion. This doesn't always address what happens between those two points. Mid flexion instability may be between 30-60 degrees. Proper tension of the PCL may address this but I don't think it's crazy to say that the articular geometry of the Attune helps this. If articular geometry doesn't help performance then why aren't we still using the basically flat tibial inserts of the late 80s early 90s. Part of the problem is that mid flexion instability hasn't been very well defined in the past.
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How does the sagittal geometry of the Attune femur and insert differ from Sigma?
 
























Anonymous said:
More instruments breaking while in use. They will do a field recall AGAIN. We cant get away from this cloud of recalls. Impactors and punch, sizing guides
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I would hate to think what would happen if this were not the most researched product in company history and the largest orthopaedic launch ever. Blah blah blah blah blah
 






Anonymous said:
I would hate to think what would happen if this were not the most researched product in company history and the largest orthopaedic launch ever. Blah blah blah blah blah
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RESEARCHED did you just say that? Depuy doesnt RESEARCH implants, its called the ASR. You are confused, what we do is launch products (like reclaim) put them to the field then bring them back due to failures. We are Depuy, just tell docs what we think they want to hear and get it out to make a few million dollars then recall it. See it is a very simple and effective way of doing business just ask the guys at the top. Attune is just another me-too product that has cool instruments and a few changes so we get rid of things like patellar clunk and oversizing. Get real dude, smoke a doobie and check out the "jnj girl" everyone is talking about she is so rad.
 












Anonymous said:
Being stable in flexion and managing the flexion gap has nothing to do with mid flexion stability? Huh? I think John Insall just rolled over RIP
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There is no data that conclusively identifies what causes mid-flexion instability. Ironic that Stryker data shows j-curve Duracon more stable in mid-flexion. Anyone who claims to have a solution is full of it.

Insall was my hero early on, thanks for the reminder as to where most of these concepts come from.
 






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