Data di Pubblicazione:
2019
Citazione:
Intra-and inter-operator reability of a novel hand protocol during grip movement / P. Pedersini, J.H. Villafañe, B. Piovanelli, V. Cappellini, R. Buraschi, J. Pollet, S. Negrini. ((Intervento presentato al 19. convegno Congresso Annuale SIAMOC tenutosi a Firenze nel 2019.
Abstract:
INTRODUCTION
Quantitative and qualitative measures of human movement can be two important features for
discriminating healthy and pathological conditions, for expressing the outcomes and clinically changes
in subjects' functional state and for helping in the decision making within clinical setting. Clinical scales
are the most frequently used instruments for the upper extremity functional assessment [1]. Currently
there are no methods sufficiently accurate that analyze the hand mobility in clinical practice. The
purpose of the study was to evaluate the Intra-and inter- operator reliability of a novel hand protocol
during grip movement.
METHODS
5 healthy subjects were scheduled for analysis. The experimental protocol required the positioning of 8
optoelectronic cameras and 24 markers. Three reference markers are located on the Head of Radius,
on the Styloid processes of Radius and Ulna to determinate the wrist coordinate frame and global
position and orientation of the model. Then, a marker is placed on the hand dorsum, corresponding to
the position of scaphoid, capitate and lunate bones to determinate the dorsum coordinate frame and
the direction during the movement. A marker is placed on each hand joint (metacarpal, proximal and
distal) and on the top of the finger to determine the position of the segment hand. The subjects perform
a grip movement in order to grasp a cylinder at a non-imposed speed, and return to starting position
(Figure.1). Each subject received 2 markerizations by two different operators (A and B) and they carried
out 3 tests at a time T0 and at a time T1 (a week after) for each markerization [2]. The following distances
were considered in the analysis, between SCAL and 5 points: HR, CMJT, Met3, Dist3, Dist1.
RESULTS
Intraclass correlation coefficients were calculated to assess inter- and intra-operator reliability.
Operators did not obtain significantly different values. Test-retest reliability of the markers positions
measurements was good (test: 0,893, p<0.001; retest: 0,773, p<0.01) and intra-operator reliability was
excellent (A: 0.983, p<0.001; B: 0.993 p<0.001).
This system provides information on quality and amplitude of the movement. Hand movement analysis
by 3D kinematics has the potential to become an important clinical evaluation method and no
standardized protocol for clinical application has yet been developed [3]. A good intra- and interoperator reliability provides a reliable protocol in order to apply it in clinical practice to study possible
patterns in pathological conditions. The study is still ongoing and we expect that a larger sample size
will produce a statistical significance.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Elenco autori:
P. Pedersini, J.H. Villafañe, B. Piovanelli, V. Cappellini, R. Buraschi, J. Pollet, S. Negrini
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