Preoperative left hip x-ray performed prior to explant and debridement. Image shows extensive local tissue reaction (Hounsfield units 167, 8.7 × 3.5 cm in the axial plane with involvement extending 25 cm in craniocaudal dimension) around the left hip prosthesis. There is significant replacement of the left gluteus medius muscle posteriorly with the abnormal soft tissue tracking inferiorly in the trochanteric bursa and fascial planes deep to the iliotibial tract.