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Author Topic: Internal Fixators & MRI  (Read 3439 times)

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Offline Lizzie - UK

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Internal Fixators & MRI
« on: February 03, 2005, 12:06:07 AM »
Re the above subject - how do they work together?  Aren't internal fixators a form of metal?  Surely you cannot have MRI's with any form of metal in your body! 

I'm interested to know what happens. 
Past History of L&R Knee
Bilateral OA
Medial Meniscal Tears
Lateral Releases & Medial Reefings
Ruptured LCL, MCL & PCL
Adhesions in the interconylar notch of ACL removed
Suprapatella plication
Debridements/Lavages
Deep chondral fissure in crest of patella
Awaiting MRI - LK
TKR - RK

Offline nellypurple

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Re: Internal Fixators & MRI
« Reply #1 on: February 03, 2005, 02:54:47 AM »
Hi
I have just had a MRI and that was an experience in itself that no-one warned me about!! Metal is definitely a no-no so I don't know how they get round that one, they even wanted to know if I had any tatoos!! What was that about?
What hosp are you under? I am at St Georges  Tooting, awaiting to see knee specialist this month.I see you are in W. London.
Hypermobility leading to maltracking and now severe damage on both FJs = OA.
Motorbike accident accelerated damage.
Awaiting TKRs when I'm 50!!

Offline heather k from wales

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Re: Internal Fixators & MRI
« Reply #2 on: February 03, 2005, 09:12:26 AM »
I have quite a few titanium screws and bone staples and there was no problem with the MRI.  The image is just a bit fuzzy around the metalwork.  Normal metal which is picked up by a magnet is a definate NO NO, so its off with all the jewelrey and watches and definatley no money or clothes with metal zips, poppers or buttons!, but the type which isnt sensitive to magnets like stainless steel and titanium are fine.
Not 100% sure on this, but I've has 2 MRI's in the last year with the metalwork in my leg and no problem with the MRI's!.

Heather ;)
91 Mangled Right knee on trials motorbike
94 Meniscus Repair
95 ACL/LCLrec,notchplasty,bone graft
01 90% Menisectomy
02 Scope
03 ACLrec,LAD
OA,osteophytes
04 Ch'plasty, ACLdeb,Suprapatella mbr ex, haematoma
04 Scope
March 06 Scaphoid op/bone graft
Nov 07 Thyroid Cancer ops x 2, radiation

Offline Lizzie - UK

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Re: Internal Fixators & MRI
« Reply #3 on: February 03, 2005, 07:23:22 PM »
What hosp are you under? I am at St Georges Tooting, awaiting to see knee specialist this month.I see you are in W. London.

I'm now under the Royal National Orthopaedic Hospital in Stanmore, Middlesex.  It is apparently the best specialised hospital for orthopaedics in the UK!  The OS I am seeing is Mr Tim Briggs.  He specialises in Autologous Chondrocyte Implantation - cartilage transplantation.  He is very nice.  Very open and rather a charmer!

I'm just waiting for an MRI.  Although I am 99% sure that when I had my knee aspirated last year that they broke the needle and there is still parts of the needle still in my knee.  I don't want to have to wait 22 weeks for this MRI and find out that I can't have it, especially as I have private insurance.  The only thing that is holding me back is the MRI, which my private insurance will not cover.
Past History of L&R Knee
Bilateral OA
Medial Meniscal Tears
Lateral Releases & Medial Reefings
Ruptured LCL, MCL & PCL
Adhesions in the interconylar notch of ACL removed
Suprapatella plication
Debridements/Lavages
Deep chondral fissure in crest of patella
Awaiting MRI - LK
TKR - RK

Offline Lizzie - UK

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Re: Internal Fixators & MRI
« Reply #4 on: February 13, 2005, 08:41:01 AM »
Heather

Thank you sooooo much for your kind reassurance.  I think that I am/was getting myself wound up about the part of needle that is still in my knee.  It would only be a very small piece of needle, but I was just scared that it might do something weird to my knee, whilst I was in the MRI machine.

I think that the more you have things done, the worse you can get.  You know what to expect.  I hate having MRI's now.  At first, they didn't bother me, but now, they really make me scared.  I don't like that loud noise!!

I must try and calm down and just let them do it.  I have got to give the MRI centre another call to provisionally book a date.  They promised to call me back on Friday, but no-one ever seems to do as they say these days!!  :'(

Thank you once again for your support.

With much love ... Lizzie xx
Past History of L&R Knee
Bilateral OA
Medial Meniscal Tears
Lateral Releases & Medial Reefings
Ruptured LCL, MCL & PCL
Adhesions in the interconylar notch of ACL removed
Suprapatella plication
Debridements/Lavages
Deep chondral fissure in crest of patella
Awaiting MRI - LK
TKR - RK

Offline KJ

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Re: Internal Fixators & MRI
« Reply #5 on: February 13, 2005, 09:40:15 AM »
Like you I have a knee full of metal (12 bits including screws for 3 reconstructions and staples for osteotomy).
My very experienced London surgeon did not think an MRI would be a problem to look at the medial side of my knee last year but the scan was unfortuantely totally unreadable and I ended up with another arthroscopy

It also depends on the strength of the magnet in the scanner.

So sometimes you just can't tell whether it will work or not
KJ
ACL/PCL/MCL/PLC rupture April 01
diagnostic arthroscopy June 01
PCL reconstuction Sept 01; MUA Oct 01
ACL reconstruction Nov 01; arthroscopy Jan 03
HTO,posterolateral recon + ACL/PCL revision recons Sept 03;
MUA Jan 04
arthroscopic debridement of scartissue May 04
metalwork removal April 05

Offline Lizzie - UK

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Re: Internal Fixators & MRI
« Reply #6 on: February 13, 2005, 11:18:10 PM »
Thank you everybody for putting my mind at rest.  I don't care about the quality.  I just didn't want to go through any kind of pain, or discomfort.  I'll call the MRI centre first thing tomorrow to get an appointment.

Thank you guys - you are truly the best people around to have. 

Love you guys to bits... Lizzie xx
Past History of L&R Knee
Bilateral OA
Medial Meniscal Tears
Lateral Releases & Medial Reefings
Ruptured LCL, MCL & PCL
Adhesions in the interconylar notch of ACL removed
Suprapatella plication
Debridements/Lavages
Deep chondral fissure in crest of patella
Awaiting MRI - LK
TKR - RK

Offline Leentje

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Re: Internal Fixators & MRI
« Reply #7 on: February 14, 2005, 03:17:55 PM »
You can have MRIs when you have screws, staples, plates, pins, nails, prosthesis etc but they have to be anchored IN the bones!!!!! If they are only in soft tissue (like morphine pumps, insuline pumps, pace-makers etc...)they might loosen and anyone knows what can happen then :o... The images can indeed be fuzzy around the area where the metal was inserted but normally this is only minor.

I had an MIR post TTT no problems whatsoever. Just don't think about it, the MRI people know what they are doing, will ask you questions (don't wear jewelery...). The reason they asked for the tatoo is that some kinds of polish, make-up and tatoo paint can contain little metal particels that might change the images. Make up you can remove, tatoos not (hehe) but they change the MRI machine settings.

Hope this helps.

Helena
Bilat patellar malalignment/PFdysplasia
00/06/83 L wrist #
11/12/00 L knee LR + chondroplasty
21/08/02 L knee TTT
02/03/04 L knee stretched PCL
11/09/07 L ankle dislocation/medial avulsion #
25/05/09 L ankle medial avulsion # AGAIN!
05/06/13 R ankle dislocation

Offline nick157

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Re: Internal Fixators & MRI
« Reply #8 on: February 22, 2005, 01:29:40 PM »
What hosp are you under? I am at St Georges Tooting, awaiting to see knee specialist this month.I see you are in W. London.

I'm now under the Royal National Orthopaedic Hospital in Stanmore, Middlesex. It is apparently the best specialised hospital for orthopaedics in the UK! The OS I am seeing is Mr Tim Briggs. He specialises in Autologous Chondrocyte Implantation - cartilage transplantation. He is very nice. Very open and rather a charmer!

I'm just waiting for an MRI. Although I am 99% sure that when I had my knee aspirated last year that they broke the needle and there is still parts of the needle still in my knee. I don't want to have to wait 22 weeks for this MRI and find out that I can't have it, especially as I have private insurance. The only thing that is holding me back is the MRI, which my private insurance will not cover.

Lizzie,

I had my ACL repaired four and a half weeks ago by Tim. He certainly gets straight to the point doesn't he!  :D

Offline ProfLiebstrom

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Re: Internal Fixators & MRI
« Reply #9 on: February 22, 2005, 11:14:34 PM »
I always had images of if you had metal inside you and you go for an MRI of them flying out and ripping your skin and flesh.......so they jsut make the image unreadable?

Offline soccerdoc

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Re: Internal Fixators & MRI
« Reply #10 on: March 07, 2005, 03:26:43 AM »
The quality of the image depends on the magnet and the software.  I still have the hardware from my HTO and had an MRI to r/o a tear in the posterior horn of the lateral meniscus.  The images were quite good.

Jim
L Knee: 1980 medial plication (?);1994 medial menisectomy 'bucket-handle tear; 2000 medial menisectomy w/dx mod-severe osteoarthritis; 2002 debridement w/dx severe osteoarthritis; 2003 HTO and LR.6/2/05 HTO hardware removal and debridement arthroscopy, 2009 L knee arthroscopy great result

Offline tony38

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Re: Internal Fixators & MRI
« Reply #11 on: April 20, 2005, 01:37:02 AM »
This site really is a treasure chest of info. I have hardware in my knees holding my 10 pc fractured patella. The fragments are not fusing together and my OS is going back in to remove the little bits out. I have not asked my OS, but I think he has necrosis on his mind. He's not very open and I am looking around for a second opinion.
I have read that X-rays would not show early necrosis but MRI's or a CT scan would.
I did not consider asking for an MRI because of my hardware, but would definitely ask for one now.
It is true, that only ferrous metals react to magnetism, and they definitely would not put in anything of the sort inside someone's body.
The tattoo part I heard as an urban legend that the metal elements in the ink causes the tattoo to rash violently, but have never personally verified it as true.
Thanks a lot eveyone for the information, I'm really glad to learn these.
 
« Last Edit: April 20, 2005, 01:39:36 AM by tony38 »
Jan 23/05 fractured left patella, ruptured quad tendon and both collateral ligaments.
Jan 24/05 ORIF 2 wires with 4 pins.
Jan 24-May 5 leg cast/immobilized, no PT.
May 6 finally released for PT, ROM 0-32.
Jun/05 ROM 0-77.