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Equivalence of X, Y and Z axes with the movement that they represent
| Surface placement: | Humerus | Ulna and radius | Scapula | Sternum |
|---|---|---|---|---|
| Anatomical segment represented: | Humerus | Forearm | Scapula | Thorax |
| Axis | ||||
| X | IN-EX | PR-SU | AN–PO | Axial rotation |
| Y | AB-AD | ElFL–EX | PR–RE | Flexion and extension |
| Z | FL-EX | Carrying angle | ME-LA | Lateral rotation |
