Ultrasonographic appearance of cartilage calcification (chondrocalcinosis) of the wrist

This long axis sonogram of the wrist of a 72-year-old woman with cartilage calcification (chondrocalcinosis) shows both hypoechoic and hyperechoic areas in the triangular fibrocartilage complex. Areas of hyperechogenicity (arrows) are likely to represent calcium pyrophosphate dihydrate (CPP) crystal deposits.