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Dangerous Drugs & Medical Devices News & Commentary on Prescription Drug & Medical Device Lawsuits

2010 – Certain Acetabular Angles Produce Less Pseudotumors in Metal-on-Metal Hip Implants

Posted in DePuy Hip Replacement

One doctor at the 2010 annual meeting of the American Academy of Orthopaedic Surgeons presented findings in a report titled “The role of acetabular component positioning in the development of Inflammatory Pseudotumors“.

This surgeon, one George A. Grammatopoulos, MRCS notes that “acetabular component orientation is known to influence wear of metal-on-metal hip replacement bearings” and that “Inflammatory pseudotumour (IPT) is a recognised complication following hip-resurfacing arthroplasty (HRA), thought to occur as a response to wear debris.”

This study identified 31 patients with confirmed inflammatory pseudotumors and aimed to determine if the presence of these tumors could be correlated with a certain positioning of the hip replacement system, comparing these results with 60 hip replacement patients who had not developed pseudotumors.

Doctors found that a placement of a 20 degree anteversion and 40 degree inclination was “optimal” and that placements plus or minus 10 degrees of this optimal placement were also associated with a lower rate of pseudotumor development.

The problem is that the manufacturers of many metal-on-metal hip replacement systems have failed to notify patients of these risks at all.  Thankfully, surgeons have found methods to reduce the risk for inflammatory pseudotumors associated with metal-on-metal hip replacements now that they are known to occur, but it would have been best if the manufacturers of metal-on-metal hip replacements had warned patients and surgeons of this possibility in the first place.

Due to this apparent negligence at DePuy Orthopaedics and to the fact that company failed to accurately characterize the rate at which its metal-on-metal ASR hip replacement systems require revision surgery, a recall was issued and a number of lawsuits are currently being filed against DePuy.

If you or a loved one used a DePuy hip replacement system and required reoperation or suffered negative side effects, you may be entitled to significant financial compensation.  For a free, no-obligation DePuy ASR lawsuit consultation, contact our team of DePuy ASR hip replacement lawyers at the information provided below.  We have the compassion, resources, and experience required to win the justice you deserve.

Call today and see how we can help!

(855)  452 – 5529

justinian@dangerousdrugs.us

Our DePuy ASR™ / ASR™ XL Hip Replacement Lawsuit Information page is a great place to start if you have any questions about DePuy ASR metal-on-metal hip replacements.