Rotation sequence is an important factor in shoulder kinematics. Application to the elite players’ flat serves

A patient-specific measurement technique to model shoulder joint kinematics

“…This sequence was used because it is the best in terms of gimbal lock and amplitude coherence [18]. For the 2 motor tasks, the mean, standard deviation (SD) and root mean square error (RMSE) of the difference between the 2 measurement methods were calculated, as well as the motion amplitude (i.e., total measured motion) yielded by the fluoroscopic measurements.…”

Rotation sequence to report humerothoracic kinematics during 3D motion involving large horizontal component: application to the tennis forehand drive

“…Raw marker coordinates where smoothed according to the procedure defined by Creveaux et al (2013) and used to build the SCS for each body segment according to the ISB recommendations (Wu et al, 2005). The humerothoracic joint centre was determined by regression (Dumas, Chèze & Verriest, 2007) (Wu et al, 2005), and the ZtXf'Yh" and XtZf'Yh" Cardan sequences respectively recommended for most joints by the ISB (Wu et al, 2002, Wu et al, 2005 and 8 demonstrated as efficient for glenohumeral joint during analytical motions (Senk & Chèze, 2006) and for humerothoracic joint during the tennis serve (Bonnefoy-Mazure et al, 2010).…”

“…Care must thus be taken when choosing a particular rotation sequence, as matrix multiplication is not commutative and several studies have documented significant differences in angular kinematics between various angle conventions and sequences (Senk & Chèze, 2006;Karduna et al, 2010;Sinclair et al, 2012;Bonnefoy-Mazure et al, 2010;Phadke et al, 2011). Indeed, each of the three-rotation permutations differently defines the magnitudes of the three rotation angles, possibly leading to incoherent joint amplitude.…”

“…Previously, the use of YtXf'Yh" sequence to estimate humerothoracic angles during the tennis flat serve has been shown to result in gimbal locks (Bonnefoy-Mazure et al, 2010), which are likely to occur as the humerus longitudinal axis Yh and thorax vertical axis Yt become more closely aligned. According to this study, XtZf'Yh" should be the preferred sequence for describing shoulder joint rotations during the serve.…”

Análisis e influencia de los sistemas de referencia en la cinemática del hombro

“…Estos estudios se dividen en dos grupos principales, los invasivos [9][10][11][12] y los no invasivos [13][14][15][16]. Los investigadores que recurren a los métodos no invasivos por lo general utilizan marcadores colocados en la piel, agregando errores a los resultados, independientemente del movimiento que haga el cuerpo.…”