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What causes itching around kness and on body after knee replacements?

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Posted on Fri, 1 Aug 2014
Question: Hi there my mum has had knee replacements done in both knees at the same time 31/2 mnths ago. Ever since she has terrible itching esp around the knees and all over her body. She also has rash on the outside areas of the knees that is blackish in colour. Biopsy reveals that it is an allergy. My question is what tests need to be done to discover what she is allergic too? All started after the replacements
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Answered by Dr. Saurabh Gupta (24 minutes later)
Brief Answer:
Skin and patch test for metals & cement.

Detailed Answer:
Hello,
Thanks for your query.

To find out whether your mother is allergic to the material used in joint,you can get allergy tests done from an allergist. Allergist will do a skin and patch test for metals & cement.

I do hope that you have found something helpful and I will be glad to answer any further query.

Take care

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Follow up: Dr. Saurabh Gupta (2 hours later)
Exactly which tests would those be? Could you please be more specific as to what tests exactly one needs to have done
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Answered by Dr. Saurabh Gupta (2 days later)
Brief Answer:
Patch test,

Detailed Answer:
Hi,

These tests are skin and patch test for the metal and cement. You can test to the metal as well as component via patch test.
In order to patch test, you need to know the metals and cement used in the implant.

Warm regards.
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Saurabh Gupta

Orthopaedic Surgeon, Joint Replacement

Practicing since :2004

Answered : 5930 Questions

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What causes itching around kness and on body after knee replacements?

Brief Answer: Skin and patch test for metals & cement. Detailed Answer: Hello, Thanks for your query. To find out whether your mother is allergic to the material used in joint,you can get allergy tests done from an allergist. Allergist will do a skin and patch test for metals & cement. I do hope that you have found something helpful and I will be glad to answer any further query. Take care