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| Symptoms | Severity |
|---|---|
| Impairment of support and compression of abdominal wall and lower thorax, of flexion and lateral motions of the spine, and of strong downward movements of the arm. |
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| Impairment of postural support fo the body or extension and lateral ovements of the spine in the cervical and thoracic region. |
|
| Impairment of postural support fo the body or extension and lateral ovements of the spine in the lumbar region. |
|
| Impairment in the muscles of respiration. |
|
| Impairment in rotary and forward movements of the head, of respiration, or of swallowing. |
|
| Impairment of movements of the head or fixation of shoulder movements. |
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