Fig. 2. A 17-year-old man complained pain and limited range of motion in the left hip joint. (A) Preoperative plain anteriorposterior radiography of the pelvis shows asymmetry of the medial hip joint space and (B) computed tomography (CT) scan shows intra-articular bony fragment (arrow). (C) In arthroscopic findings, acetabular osseo-labral fragment is widely detached and incarcerated in the joint space (asterisk). (D) Postoperative plain radiography and (E) CT scan show concentric reduction and complete removal of bony fragment. (F) Inverted labral tear is refixed after reduction.