Is all Chondrocalcinosis caused by CPP crystal deposition?
Calcium salts other than CPP, such as basic calcium phosphate (BCP), can appear as CC. For example, the calcification of intervertebral disc cartilage seen in ochronosis largely consists of calcium hydroxyapatite. Clinicians usually assume that certain radiographic patterns of CC, such as the triangular fibrocartilage complex in the wrist or the hyaline cartilage and menisci in the knees, are due to CPP deposition. However, this is not always the case and dystrophic calcifications comprising BCP deposition due to trauma can be seen in these areas, particularly if only found unilaterally.
