Figure 4

Case 3 radiographic data. (A) Anteroposterior (AP) projection of the left hip showing an ill-defined calcific spot (arrow) close to the acetabular roof. (B) Coronal and (C) sagittal three-dimensional reconstruction computer tomography images verified the large and irregular calcium mass. (D) The coronal enhanced fat-suppression phase arthro-MR slice showed miscellaneous signal changes of the origin of rectus femoris combined with labral tear (arrow). The tendon fibers had been displaced by the calcium mass and there was a large bone erosion of the acetabulum with peripheral soft-tissue edema. (E) Typical snowstorm-pattern after incision of the superficial capsular over the calcification (FH, femoral head). (F) Postoperative AP view demonstrating complete removal of calcific material; ^*non-absorbable suture anchor for the labral repair.