Article

To measure the scapulohumeral rhythm (SHR) in outpatient settings, the motion
analysis protocol named ISEO (INAIL Shoulder and Elbow Outpatient protocol) was
developed, based on inertial and magnetic sensors. To complete the sensor-to-segment calibration, ISEO requires the involvement of an operator for
sensor placement and for positioning the patient's arm in a predefined posture.
Since this can affect the measure, this study aimed at quantifying ISEO intra-
and inter-operator agreement. Forty subjects were considered, together with two
operators, A and B. Three measurement sessions were completed for each subject:
two by A and one by B. In each session, the humerus and scapula rotations were
measured during sagittal and scapular plane elevation movements. ISEO intra- and
inter-operator agreement were assessed by computing, between sessions, the: (1)
similarity of the scapulohumeral patterns through the Coefficient of Multiple
Correlation (CMC(2)), both considering and excluding the difference of the
initial value of the scapula rotations between two sessions (inter-session
offset); (2) 95% Smallest Detectable Difference (SDD(95)) in scapula range of
motion. Results for CMC(2) showed that the intra- and inter-operator agreement is
acceptable (median>/=0.85, lower-whisker >/= 0.75) for most of the scapula
rotations, independently from the movement and the inter-session offset. The only
exception is the agreement for scapula protraction-retraction and for scapula
medio-lateral rotation during abduction (inter-operator), which is acceptable
only if the inter-session offset is removed. SDD(95) values ranged from 4.4
degrees to 8.6 degrees for the inter-operator and between 4.9 degrees and 8.5
degrees for the intra-operator agreement. In conclusion, ISEO presents a high
intra- and inter-operator agreement, particularly with the scapula inter-session offset removed.
CI - Copyright (c) 2011 Elsevier B.V. All rights reserved.

Langue : ANGLAIS