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. 2020 Mar 4;142(7):074502. doi: 10.1115/1.4045814

Fig. 2.

Landmarks needed for Landmark calibration method (a) and postural calibration method (b). (a) In the landmark method, the landmarks given by solid circles are localized with the help of the stylus. The center of the glenohumeral joint (GH, open circle) cannot be palpated and is estimated from shoulder movements. Note that some landmarks, such as the ulnar styloid, should be located in a different posture (see above). (b) In the postural method, the illustrated landmarks are aligned parallel to the axes of the universal frame of the transmitter (U). Laser levels used to aid in this process are depicted as dashed lines. Abbreviations in A and B are defined in Tables 4 and 5, respectively.

Landmarks needed for Landmark calibration method (a) and postural calibration method (b). (a) In the landmark method, the landmarks given by solid circles are localized with the help of the stylus. The center of the glenohumeral joint (GH, open circle) cannot be palpated and is estimated from shoulder movements. Note that some landmarks, such as the ulnar styloid, should be located in a different posture (see above). (b) In the postural method, the illustrated landmarks are aligned parallel to the axes of the universal frame of the transmitter (U). Laser levels used to aid in this process are depicted as dashed lines. Abbreviations in A and B are defined in Tables 4 and 5, respectively.