“…Moreover, many techniques for 3D-kinematic research have shown adequate to good reproducibility: electro-goniometers and electroinclinometers (McClure et al, 1998;Tousignant et al, 2001;Haynes and Edmondston, 2002;Edmondston et al, 2005) skin-surface devices (Mannion et al, 2004), the Cervical Range of Motion device (CROM) (Capuano-Pucci et al, 1991;Youdas et al, 1992;Dhimitri et al, 1998;Hickey et al, 2000), electromagnetic tracking (Trott et al, 1996;Jordan et al, 2000;Amiri et al, 2003a,b;Carpaneto et al, 2004;Jordan et al, 2004), ultrasound-based systems (Vogt and Banter, 1997;Natalis and Konig, 1999;Mannion et al, 2000;Schreiber et al, 2001;Wang et al, 2005), video-based devices (Robinson et al, 1993;Antonaci et al, 2002) and low dose fluoroscopy or systems combining enhanced digital fluoroscopy videography (DFV) with distortion compensated roentgen analysis (DCRA) (Breen et al, 2006;Teyhen et al, 2005).…”