operative technique造句怎么写

The causes of atlantoaxial dislocation, operative techniques involved and results are discussed.

Objective: To investigate the operative technique of laparoscopic cholecystectomy for porcelaneous gallbladder.

The operative technique of laparoscopic cholecystectomy for frozen triangle

Objective: To study the operative technique for extended middle fossa extradural transpetrosal approach to petroclival region and to provide correspondingly anatomical basis.