Navigated percutaneous pelvic sacroiliac screw fixation: experimental comparison of accuracy between fluoroscopy and Iso-C3D navigation - Citak, M; Hufner, T; Geerling, J; Kfuri Júnior, Maurício; Gansslen, A; Look, V; Kendoff, D; Krettek, C (Comput Aided Surgery, 2006)