We have treated thirteen complex plateau fractures involving both condyles with one of the following conditions with the use of the combined anterior and posterior approaches in a modified supine position. Associated PCL avulsion fracture, displacement of major fracture plane dominantly at the back, large coronal fracture fragment involving medial or lateral condyles. A patient is placed on an operation table in supine position with a bump under the contralateral buttock. The well leg is placed in a lithotomy position and the injured leg is placed over a sterilized Mayo stand separately. For the posterior approach the table was tilt toward the injured side with the hip abducted and rotated externally. With a modified patient's positioning we were able to use combined anterior and posterior approaches simultaneously for the management of certain complex plateau fractures without changing the draping.