Clients are not merely trying to screw down fees, but rather are aiming for predictability and fairer, not just lower, bills.

Objective to develop an improved adjustable bilateral aiming device to substitute the old single-side one to guide lateral arch screw insertion of axis.

Conclusion: Using the manual aiming device for the cervical pedicle for screw placement can improve the accuracy and safety during operation, and this device can be applied and popularized clinically.