Fig. 3From: Heterotopic ossification following hip arthroplasty: a comparative radiographic study about its development with the use of three different kinds of implantsCase of severe heterotopic ossifications. HOs developed in a patient who had been moved to the emergency room after ceramic-ceramic THR because of her critical condition. The patient remained motionless for 1 month after hip replacement, and 1 year later, heterotopic ossifications were removed (a, b)Back to article page