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A neurapraxic brachial plexus injury
1%
8/870
A neurapraxic axillary nerve injury
94%
817/870
A neurapraxic musculocutaneous nerve injury
2%
20/870
A neurotmetic axillary nerve injury
13/870
An axonotmetic musculocutaneous nerve injury
6/870
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The most common nerve injury associated with dislocation of the shoulder involves the axillary nerve. This is typically a stretch injury, or neurapraxia, that occurs with anterior displacement of the humeral head out of the glenoid. The suspected diagnosis can be confirmed with neurodiagnostic testing after the first 2 to 3 weeks. A gradual return to normal function is the expected result, though mild deficits may remain. A neurotmetic injury, in which there is complete disruption of the entire nerve, would show no return of function. This type of injury is more likely associated with a penetrating injury, a laceration secondary to a fracture fragment, or occasionally with a direct blow of sufficient force.
3.6
(5)
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