Calcium pyrophosphate dihydrate deposition disease (CPPD) is a build up of calcium crystals in the joints. These crystals cause inflammation in the joints, which causes arthritis like conditions known as:

  • Pseudoosteoarthritis
  • Pseudogout
  • Pseudorheumatoid arthritis

Over time the inflammation can cause damage to the tissue inside the joint and lead to pain and chronic disability. CPPD can be managed with medical care.

Arthritis of the Knee
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It is not known what causes these calcium pyrophosates to form, but genetics appears to play a role.