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MINERVA ORTOPEDICA E TRAUMATOLOGICA
A Journal on Orthopedics and Traumatology
UPDATES ON HIP ARTHROPLASTY 102nd CONGRESS OF THE PIEMONTESE-LIGURIAN-LOMBARD SOCIETY OF ORTHOPEDICS AND TRAUMATOLOGY (S.P.L.L.O.T.) - Brescia September 9-10, 2005
NEW TECHNOLOGIES, MODERN INSTRUMENTARIUM IN ARTHROPLASTIC SURGERY
Minerva Ortopedica e Traumatologica 2005 August;56(4):185-9
Computed tomography-guided navigation in hip replacement
Randelli F., Randelli P., Monteleone M., Visentin O., Randelli G.
Istituto Policlinico di San Donato Milanese San Donato Milanese, Milano
Aim. With this study we describe our personal experience with computed tomography (CT)-guided navigation in hip replacement. Naviga-tion is done with a computer system that orientates the surgeon during the operation by providing a continuous visual flow of three dimensional anatomic and numeric data.
Methods. Since 2001, this technique has been employed in total hip replacement in 60 patients. All patients underwent postoperative CT; the real accuracy of the CT-guided technique versus the conventional procedure in positioning the cup prosthesis was compared (mean error, 3.9°, range, 0-8°). Controls were 95 total hip replacement patients evaluated by postoperative CT (mean error 6°, range, 0-23°).
Results. CT-guided navigation improved the accuracy of cup prosthesis placement, as demonstrated by case-control studies conducted at our institution.
Conclusion. Although the use of CT-guided navigation achieved greater accuracy in placement of the acetabular cup, whether or not the technique is clinically effective still needs to be corroborated by long-term data and in comparison with the optimum results surgical techniques can achieve without the auxiliary use of navigation.