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TKR's and Knee immobilizers

 
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TKR's and Knee immobilizers - July 24, 2007 5:01:19 PM   
Ahlecs76

 

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I have been noticing lately ihow patients s/p TKR's come in in the SNF where I work wearing knee immobilizers. Is there anything in the book about pt's having to wear these immobilizers s/p TKR? Is this just something physicians order and get for patients to maintain good knee extension ROM? If so how long do we keep it on? Just want to know your thoughts. Thanks y'all!!
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RE: TKR's and Knee immobilizers - July 24, 2007 6:13:58 PM   
SJBird55

 

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I've never treated a patient post TKA with a knee immobilizer.  I'd ask the surgeon why a knee immobilizer is being utilized for the patients.  There are studies out there on continuous passive motion machines which is completely the opposite of what you are seeing - knee immobilizers?  Hmmm... strange.  I wonder if there is a scheme where some durable medical equipment company made a deal to take care of a surgeon's patients for durable medical equipment needs and they slap on a knee immobilizer to basically make some cash.  I'd question how a patient will be able to achieve 90 degrees 2 weeks post op if the patient is wearing a knee immobilizer.  You have issues over there....

(in reply to Ahlecs76)
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RE: TKR's and Knee immobilizers - July 24, 2007 7:44:49 PM   
jma

 

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I have seen a few and the surgeon's rationale was to minimize the amount of knee flexion contracture that would ensue but it would not be worn for a long period of time.

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RE: TKR's and Knee immobilizers - July 25, 2007 8:25:39 AM   
orthotherapist

 

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It used to be fairly common practice for TKA patients to have knee immobilizers post op when up and about until they were able to do a SLR without lag (good quad control) - have not seen this for many years though so I would question MD

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RE: TKR's and Knee immobilizers - July 25, 2007 8:36:34 AM   
ragempt

 

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Sjbird55

do you usually have problems getting flexion back with patients? i dont but have had some problems with extension. To me the extension splint is a logical idea although i have never seen one where i practice, so i have no experience

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RE: TKR's and Knee immobilizers - July 25, 2007 12:08:32 PM   
USAPT

 

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I see the same thing in this rural community hospital I'm currently at. I actually had two post-ops upstairs with immobilizers on. Communication with the MD is key. I agree with SJ, you can't get the 90* in 2 weeks if their sleeping in the brace. I'm used to outpt ortho and having pt going 2 days post op. maybe it's an education thing, but one would hope Orthopedic MD would be very aware of this.     

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RE: TKR's and Knee immobilizers - July 25, 2007 4:34:10 PM   
Ahlecs76

 

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USAPT
Talk about rural healthcare facilities, I am in Clinton, NC. Middle of nowhere right now. I see you are from Raleigh, NC. That ain't too rural to me. Unless you just live there and work somewhere else. All points taken to consideration above. Will talk to the MD and see what's up with the knee immobilizer. Thanks y'all

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RE: TKR's and Knee immobilizers - July 25, 2007 6:10:29 PM   
SJBird55

 

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rage, I can't say that patients in this area have problems achieving 0 extension or 110 flexion.  The surgeons in this area do not use immobilizers.  I've recommended a dynamic splint once in my career.  This particular patient was not achieving 0 extension and was lacking 20.  He was somewhat demented and I knew he was sitting around all day not doing a darn thing.  If he was lying around I can guarantee he was propping his knee on something.  I really don't see a clinical rationale.  Even when patients have an extensor lag I wouldn't recommend an immobilizer.  They need to learn to turn on their muscles and tighten up their quads.  If they wear an immobilizer, I'm sure they'd be lazy and just use hip flexors to get their leg on the bed if moving from sit to supine.  An extensor lag isn't going to damage the components or cause any huge harm to patients (especially since they all start with walkers).  I see more of a financial benefit for some DME company.

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RE: TKR's and Knee immobilizers - July 26, 2007 9:21:27 AM   
Tom Reeves DPT ATC

 

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Our surgeons usually have the patients in an immobilizer for 24 hours post op then the battle begins for the patient to maintain the ROM.  Remember the best predictor of post op ROM is pre-op ROM so if your patient had a 30 degree flexion contracture for 15 years before surgery, you are probably not going to get them straight.  And if by some chance you do, they will probably gravitate back to some type of flexion once they are discharged.

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RE: TKR's and Knee immobilizers - July 26, 2007 10:56:58 AM   
USAPT

 

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Ahlecs76

You were correct, I live in Raleigh but work elsewhere...Oxford, NC. A nice little country drive.

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RE: TKR's and Knee immobilizers - July 27, 2007 8:50:16 AM   
AdamP

 

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I work with 1 MD who uses the immobilzer frequently. He states that he prefers to add a slight flexion bias into the replacement then immobize into extension. Most of his pts achieve 0-125 passively.

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RE: TKR's and Knee immobilizers - July 27, 2007 1:26:51 PM   
ragempt

 

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SJ,
i agree with your statment. i just meant for the first 48 hours or so. just a thought

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RE: TKR's and Knee immobilizers - July 28, 2007 8:41:35 AM   
jma

 

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Yes, the surgeons I worked with sometimes have the patients were them for 2-3 days post op and then they are no longer needed.

(in reply to ragempt)
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