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Middle Back Pain

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Middle Back Pain Definition


Thoracic outlet syndrome (TOS) is a collective name for disorders that involve compression, injury, or irritation to nerves and blood vessels in the parts of the lower neck and upper chest called the “thoracic outlet.” These disorders are not all well understood and have little in common with one another, except that they occur in the same part of the body.

Thoracic Outlet Syndrome

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