Evaluating alternative registration planes for imageless, computer-assisted navigation during supine total hip arthroplasty
IHS
During surgery in the supine position, using a functional registration plane was more accurate than using an anatomic reference plane. The increased measurement error using an anatomic reference plane was clinically significant, with nearly one-third of anteversion results outside of a ± 10° target window. Using the table tilt method of registration instead of anatomical landmarking provided further improvements in accuracy.