Is osteoarthritis with calcium crystals different from osteoarthritis without calcium crystals?
Many people with osteoarthritis, particularly of the knee, have calcium pyrophosphate crystals in their affected joint cartilage, often in the knee. This combination is called osteoarthritis with calcium pyrophosphate crystal deposition (osteoarthritis with CPPD for short).
CPP crystals tend to make your osteoarthritis worse. The affected joints are likely to become more painful and stiff than an osteoarthritic joint without calcium crystals. The narrowing of cartilage and thickening of bone associated with osteoarthritis are also more likely to progress over several years when crystals are present. You may have attacks of acute CPP crystal arthritis in these joints.