Before starting the procedure, it is good practice to confirm a number of basic but important factors:
The patient is placed in a supine position.
Bolsters are placed under the thigh and the hindfoot to suspend the lower leg high enough to have maneuvering space for the rings. Alternatively, folded or rolled towels can be used during surgery to aid in ring clearance. It is important to anticipate the ability to obtain lateral C-arm images during surgery.
