| US | Ultrasound |
| DOF | Degrees of freedom |
| STA | Soft tissue artifact |
| SD | Standard deviation |
| RMS | Root mean square |
| Flex | Flexion rotation |
| Ext | Extension rotation |
| Add | Adduction rotation |
| Abd | Abduction rotation |
| Ext | External rotation |
| Int | Internal rotation |
| Ant | Anterior translation |
| Post | Posterior translation |
| Prox | Proximal translation |
| Dist | Distal translation |
| Lat | Lateral translation |
| Med | Medial translation |
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