Calcium pyrophosphate dihydrate crystal deposition can occur in spinal structures, such as interertebral discs, ligaments, articular cartilage, synoium, and joint capsules16.

• 双水焦磷酸钙结晶沉积可发生在脊柱，例如椎间盘，韧带、关节软骨，滑膜和关节囊。