case_images: PMC6045490_01
case_images: PMC6045490_02
case_images: (
  A
  and
  B
  ) The computed tomography (CT) scans show the intra-articular bony fragment which caused the nonconcentric reduction of the left hip.
case_images: 10-1055-s-0038-1661408-i180372cr-1.jpg
case_images: PMC6045490_02_10-1055-s-0038-1661408-i180372cr-1.jpg
case_images: FI180372cr-1
case_images: Because the postreduction AP view of his left hip showed a nonconcentric reduction, a computed tomography (CT) scan ( Figs. 1A and B ) and a magnetic resonance imaging (MRI) ( Figs. 2A and B ) of his left hip were performed.
case_images: Small intra-articular osteochondral fragment, which was detached from the femoral head.
case_images: 10-1055-s-0038-1661408-i180372cr-3.jpg
case_images: PMC6045490_02_10-1055-s-0038-1661408-i180372cr-3.jpg
case_images: FI180372cr-3
case_images: We were able to identify an osteochondral fragment in the fovea attached to the posterior labrum complex ( Fig. 3 ).
case_images: (
  A
  ,
  B
  , and
  C
  ) Intraoperative images showing the enfolded labrum, which was reduced with careful manipulation with a hook. The labral complex was stable after reduction.
case_images: 10-1055-s-0038-1661408-i180372cr-4.jpg
case_images: PMC6045490_02_10-1055-s-0038-1661408-i180372cr-4.jpg
case_images: FI180372cr-4
case_images: Furthermore, we were able to manipulate the posterior labral complex with a hook until it was unfolded ( Figs. 4A-C ).
case_images: Anteroposterior (AP) radiograph shows the concentric reduction of the hip after arthroscopic treatment.
case_images: 10-1055-s-0038-1661408-i180372cr-5.jpg
case_images: PMC6045490_02_10-1055-s-0038-1661408-i180372cr-5.jpg
case_images: FI180372cr-5
case_images: Postoperatively concentric hip reduction was confirmed with an AP radiograph of the left hip ( Fig. 5 ).