Hypersensitivity to medical implants such as dentures,pacemakers, and hip prostheses may be developed at alater time, afte...
Most common symptoms that may signify thatthe body is rejecting the implant include skinrashes, inflammation, and an incre...
These reactions are mostly blamed on the metallicdebris that sloughs off the surfaces of the hip implantover time. Even wh...
Locally, metallic debris can also be deposited inthe tissues surrounding the implant. This maycause swelling, limited rang...
To correct these, some parts or the entire devicemay have to be removed and replaceddepending on the severity of the aller...
To avoid this, skin tests are performed prior tothe procedure. However, this may not be entirelyreliable because the deep ...
At present, the safety of metal-on-metal hipprosthesis systems are still under review,because of the increasing number of ...
Source:http://wallinside.com/post-1897255.htmlReferences:emedicine.medscape.com/article/1230696-overviewncbi.nlm.nih.gov/p...
Hypersensitivity Responses to Hip Replacements
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Hypersensitivity Responses to Hip Replacements

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http://www.hiprecalllaw.com/ - Hypersensitivity to medical implants such as dentures, pacemakers, and hip prostheses may be developed at a later time, after prolonged exposure to the material of the device, orthopedic journals say. More at http://www.hiprecalllaw.com/updates/a-group-of-hip-replacement-recipients-in-the-u-k-file-lawsuits-against-depuy/

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Hypersensitivity Responses to Hip Replacements

  1. 1. Hypersensitivity to medical implants such as dentures,pacemakers, and hip prostheses may be developed at alater time, after prolonged exposure to the material ofthe device, orthopedic journals say. It is one of themany reasons why modern hip replacement devices failand need to be revised. In fact, because ofcomplications related to hip implants, many people suchas the group of metal hiprecipients in the UK have filed lawsuits against DePuy,one of the top medical device manufacturers.
  2. 2. Most common symptoms that may signify thatthe body is rejecting the implant include skinrashes, inflammation, and an increase in theintensity of pain. Sometimes, an elevated bodytemperature may also be manifested. Accordingto the Journal of Bone and Joint Surgery, cobaltand chromium allergy account for five percent ofthe total number of hip replacement failures. Withthis, doctors and patients should be wary inmonitoring all possible symptoms that suggest anallergic reaction to these materials.
  3. 3. These reactions are mostly blamed on the metallicdebris that sloughs off the surfaces of the hip implantover time. Even when metals are more durable than anyother material for implants, it is still susceptible forcorrosion especially after a prolonged use or whenproper hip precautions are not observed. When thesemetallic fragments are released into the blood stream,serum metal ion levels increase and may causesystemic toxicity.
  4. 4. Locally, metallic debris can also be deposited inthe tissues surrounding the implant. This maycause swelling, limited range of motion, anddisplacement of the device.
  5. 5. To correct these, some parts or the entire devicemay have to be removed and replaceddepending on the severity of the allergicreactions. Although many patients haveexperienced better results when the entire hipprosthesis was removed, this procedure maypredispose both the femur and the pelvis toinjuries. With hip replacement revisions, recoverymay take a relatively long time.
  6. 6. To avoid this, skin tests are performed prior tothe procedure. However, this may not be entirelyreliable because the deep tissues may have adifferent reaction to the implant. Closelymonitoring for any allergic or any other relatedsymptoms and undergoing annual tests to checkplacement of the device and track chromium orcobalt levels in the blood are recommended bythe Food and Drug Administration for metallichip replacement recipients.
  7. 7. At present, the safety of metal-on-metal hipprosthesis systems are still under review,because of the increasing number of surgicalrevisions. These incidences have also broughtmany manufacturers to discontinue theproduction and distribution of the defective hipimplants that were reported by many to becausing damaging effects. For this reason, allmetallic hip implant recipients should be familiarwith the hip recall law.
  8. 8. Source:http://wallinside.com/post-1897255.htmlReferences:emedicine.medscape.com/article/1230696-overviewncbi.nlm.nih.gov/pmc/articles/PMC2823320/jbjs.org/article.aspx?articleid=27526orthopedics.about.com/od/orthopedicsinformation/f/metalallergy.htm

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