Following a total hip replacement, this 61 year-old patient developed heterotrophic ossification which was removed due to friction against the greater trochanter of the femur.
He is now experiencing discoloration, pain, and paresthesia. The leading diagnosis is complex regional pain syndrome (CRPS), which is characterized by pain, swelling, limited range of motion, vasomotor instability, skin changes, and patchy bone demineralization. It frequently begins following an injury, surgery, or vascular event.
See more cases like this on Figure 1.