Table 2.
Segment and Coordinate System (CS) Definitions.
| Segment | Anatomical Landmarks | Tracking Landmarks | Anatomical CS ORIGIN | CS Sign Convention |
|---|---|---|---|---|
| Trunk | Sternum Xiphoid C7 T10 |
Sternum Xiphoid C7 T10 |
Geometric Center between Xiphoid and T10 | Anterior (+X), posterior (-X) Medial (+Y), lateral (-Y) Superior (+Z), inferior (-Z) |
| Upperarm | Acromion process Medial epicondyle Lateral epicondyle |
Acromion process Medial epicondyle Lateral epicondyle |
Shoulder center defined by regression equation by de Leva (1996). | |
| Scapula | Angulus acromialis Trigonum scapulae Angulus inferior |
Lateral tracker marker Superior tracker marker Inferior tracker marker |
Angulus acromialis |
DE LEVA, P. (1996) Joint center longitudinal positions computed from a selected subset of Chandler's data. J Biomech, 29, 1231–3.