Monday, December 5, 2011

Video by expert in MoM hips highlighting some interesting points.

One of our readers sent this video in.  It is a nice Video with David Langton who is working diligently in the UK on the causes of the meal on metal problems.  I beleive he is an orthopedic surgeon working on a PHd in this metal tribology area of the MoM issue.

A few things he mentions  which I found interesting were:
  • The 6 year revision rate  with MoM is around 50%.
  • The rates are high because there is ware that is associated outside of the cup area in the stem which I posted about a few days ago.
  • the stems apparently have not been revised over time to accommodate larger bearing surfaces.
  • Metal ion in the blood is directly related to the amount of metal removed from the hip replacement itself.
  • Metal ions congregate locally in the hip fluid (interesting as I had a  lot of fluid around the hip.)
  • the problems with these hips is under recognized in general by the surgeons unless they know exactly what they are looking for.



  1. Connie,
    I have followed your blog now for about six months,thanks for all your efforts in sheddding some light on this debacle.I had two of these miserable things in me one failed almost immediately(18 mos.)and the second is starting to fail and cause me pain.(4 years).Knowledge is power and right now I need all the power I can get.....

  2. Of course you will need a lawyer when dealing with such a huge company as Johnson & Johnson. To the person planning to have the implant removed , make sure your surgeon replaces the DePuy stem along with the implant.
    I've had to have two seperate revisions due to a loose stem.

  3. I am not quiet sure I agree. While I will likely use a lawyer, we know that at least one other orthopedic company reached out directly to patients for settlement.

    Also, changing out a femur would not be done routienly in a revision by a surgeon unless there were some reason to prompt that kind of change. I did not have the femur replaced because my surgeon did not see any reason once he was in there to change it. It is not a given that the femur should be changed out in a revision.

  4. DePuy has not yet started making settlements , I do believe that it is a smart approach to have legal support when dealing with Johnson & Johnson
    Not changing the Femur... The stem.
    During my implant revision the surgeon checked the stem , after seven months the stem loosened resulting in a third surgery on the hip. I should have insisted that all DePuy hardware be removed and would have avoided a third surgery. it's a given if you want to avoid surgery !

  5. thanks for noting the correction. the stem is clearly a problem. All of the posts over the last few days had information relating to the issues with the stem ( the video, the PPT presentation and a few of the posts.)

    I beleive the issue with changing that is the incompatibility with other products.

    I think this is a good point you raise and I will raise this with my surgeon when I see him next especially in light of the fact that my MRI did show some infection starting around the trununion (stem.)

    Thanks for correcting this!


  6. Sure Connie, I an 4 weeks post op and hope this nightmare is coming to a end . When I saw X-rays of the original DePuy post it looked very small in comparison to the size of the bone , it became loose and had to be replaced. I'm trying to connect with other victims to learn how they are handling their situation. Celeste

  7. My first revision was due to a loose stem.My surgeon removed it with his hands ... just pulled it out.There was also a greenish black sludge around the cup and ball.That one was only in my body for 18 mos.I had severe pain in my thigh, and a lot of trouble walking.My blood levels were slightly elevated but not alarmingly high...whatever that means,the hip was aspirated fluid tested clean,MRI's didn't reveal much.I had to go to another surgeon to get a second opinion,and they found the loose stem with x rays.Seemed like a Keystone Cops adventure,but finally had the device we are starting again.

  8. So Greg , have you also had the implant removed ?
    When my implant was removed , the surgeon reassured me that he would check the stem during surgery. Six months after the implant revision , the stem became loose and had to be replaced. I also had that sludge drained from the joint before the revision surgery , it was a thick blood colored substance . What are you planning to have done next ?

  9. My right hip was completely removed and replaced with new equipment.I now sport Zimmer equipment with a cross-linked poly insert.My left hip is still DePuy ASR.I go in on the 21st to discuss revision options,I am going to ask about the stem.My surgeon wanted to keep it as of our last discussion,but that was before all this info about metal flaking at the stem neck.Truthfully,I want all this Depuy stuff gone,but removing a well knit femoral stem sounds brutal.Call me a wuss,but this is my fourth time under the knife and I really don't want to sign up for unnescessary pain and suffering.I keep wondering how many times I can roll the surgical dice and not come up craps.....

  10. I am a huge wuss . My surgeon told before my revision surgery that the stem was not part of the ASR implant recall. He said he would check the stem while replacing the DePey implant. I'm sure he did, the stem did loosen after six months . My hip is now free from all DePuy products.
    You have a right to insist that the stem be replaced if that is what you want.
    You might save yourself from having to suffer a # 5 surgery on the left hip.
    So sorry to hear that you have implants in both hips !