DePuy Attune® Prosthetic Knee Failure Rate “Unusually High”
SAN DIEGO, Calif., August 13, 2017 — Patients of the DePuy Attune® knee are experiencing complications due to an unusually high rate of “tibial baseplate loosening”. A recent study published in the May 2017 edition of The Journal of Knee Surgery Vol. 30 analyzed knee replacement patients from 3 separate hospitals and discovered that the Attune® prosthetic knee shows “an unusually high rate of early aseptic failures as a result of failure of implant–cement interface”. The loosening of the prosthetic can cause pain, muscle damage, nerve damage and infection that may require revision surgeries to completely cure. Revision surgery, in many cases, is more extensive than the initial operation because of the increased difficulty of the procedure.
The Attune® knee is the flagship prosthetic knee device system manufactured and sold by DePuy Synthes, a subsidiary of Johnson&Johnson. This knee system features an innovative newer design that had previously been purported to produce better stability, flexibility and durability. Unfortunately, reports continue to come in from both doctors and patients that the knee replacement device is prematurely failing within only a year or two of the initial implant surgery. Some even report failures within a few months after surgery. The common issue is the loosening of the baseplate bonding that attaches the knee system to the patient’s bone.
The study concludes that the major reason for these unusually high failure rates of the DePuy Attune® knee implant includes “increased constraint of tibial polyethylene, reduced cement pockets in tibia, reduced rotational stabilizers on keel (i.e., all smooth surfaces on tibial fixation surface), and roughness factor on fixed bearing” versus previous knee systems. Surgeons performing revision surgeries also are noticing and reporting similar findings that the device fails to sufficiently adhere to the bone because of the lack of a lasting bond between the patient’s leg bone and the knee implant.
The opinion of the physician group that conducted the study is that there may be many thousands of Attune® knee implant systems that are failing consistently, most are not being diagnosed and reported properly because the defect in the device is not completely clear in patient X-rays.
For those who have had an Attune® knee replacement and are concerned about the implant failing, you should report any of the following symptoms to your doctor because these symptoms may indicate the knee implant bond is loose and may cause serious injury:
The FDA maintains a database of medical implant failures reported by patients who have had complications following the initial procedure. Some of the most common side effects reported by patients who have had a DePuy Attune® prosthetic knee replacement are:
If you have had a recent knee replacement, are experiencing these kinds of complications and think that maybe your DePuy Attune® knee implant could be loosening or failing, you should see your doctor as soon as possible for an X-ray of the knee joint to determine the possible cause these side effects before an injury occurs.
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Knee replacement lawsuit claims and settlements page updated on August 24, 2017