Image-free cup navigation inaccuracy: a two-study approach. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Computer Aided Surgery Année : 2007

Image-free cup navigation inaccuracy: a two-study approach.

Résumé

The present study tested the accuracy of an image-free navigation system used for total hip arthroplasty (THA). Two parallel, prospective studies were performed: one on real patients and the other on pelvic phantoms. We used a comparison between the intra-operative cup orientation, as displayed by the navigation system, and the post-operative cup position, as measured on CT data. The mean intrinsic overall error (+/- standard deviation) found in the phantom study was 2.6 +/- 1.1 degrees (range: 1.5-4.4 degrees ) for cup abduction, and 0.9 +/- 0.7 degrees (range: 0-2.5 degrees ) for cup anteversion. The system was less accurate in the clinical operative setting. The evaluation model was able to identify, and more importantly quantify, the clinically induced error. Ameliorating this would improve the clinical accuracy of the system.
Fichier non déposé

Dates et versions

hal-00195024 , version 1 (08-12-2007)

Identifiants

Citer

Sorin Blendea, Jocelyne Troccaz, Jean-Noel Ravey, Philippe Merloz. Image-free cup navigation inaccuracy: a two-study approach.. Computer Aided Surgery, 2007, 12 (3), pp.176-80. ⟨10.1080/10929080701374265⟩. ⟨hal-00195024⟩
1468 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More