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Pathologic stages:
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Stage I: temporary irritation (chemical
inflammation?)
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Stage II: permanent tendinosis –
less than 50% tendon cross-section
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Stage III: permanent tendinosis
– greater than 50% tendon cross-section
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Stage IV: partial or total rupture
of tendon
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Phases of pain:
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Phase I: mild pain after exercise
activity, <24 hours
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Phase II: pain after exercise activity,
>48 hours, resolves with warm-up
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Phase III: pain with exercise activity,
does not alter activity
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Phase IV: pain with exercise activity
that alters activity
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Phase V: pain caused by heavy activities
of daily living
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Phase VI: intermittent
pain at rest that does not disturb sleep; pain caused by light
activities of daily living
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Phase VII: constant rest pain and
pain that disturb sleep
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