Case 1, 49-y-old male, fell from 3 m height. a-c Preoperative anterior-posterior, inlet and outlet X-rays; d Preoperative CT; e Displacement under ultrasonography when at rest; f Displacement under ultrasonography when compression; g Displacement under ultrasonography when separation. The left-right mobility was 0.72 cm and operation was chosen for the patient. h-j Postoperative anterior-posterior, inlet and outlet X-rays; k Postoperative CT; l-n Postoperative 11 months anterior-posterior, inlet and outlet X-rays. The patient recovered well and Majeed score was 90.