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Another rare cause of axillary nerve palsy can occur after utilizing a side birthing position. When the patient lies on their side for a strenuous amount of time, they can develop axillary nerve palsy. This rare complication of labor can occur due to the prolonged pressure on the axillary nerve while in a side-birth position. [4]
Symptoms can range from minor to severe and can be obvious or subtle. The right arm and hand are more likely to be affected than the left. Symptoms include atrophy of the arm or hand, claw hand, constant crying (due to pain), [10] intrinsic minus hand deformity, [11] paralysis of intrinsic hand muscles, and C8/T1 Dermatome distribution numbness.
Focal neurological deficits may be caused by a variety of medical conditions such as head trauma, [1] tumors or stroke; or by various diseases such as meningitis or encephalitis or as a side effect of certain medications such as those used in anesthesia. [2] Neurological soft signs are a group of non-focal neurologic signs. [3]
A lesion to the upper arm area, just proximal to where motor branches of forearm flexors originate, is diagnosed if the patient is unable to make a fist. More specifically, the patient's index and middle finger cannot flex at the MCP joint, while the thumb usually is unable to oppose. This is known as hand of benediction or Pope's blessing hand ...
If a forearm pronates, with or without downward motion, then the person is said to have pronator drift on that side reflecting a contralateral pyramidal tract lesion. In the presence of an upper motor neuron lesion, the supinator muscles in the upper limb are weaker than the pronator muscles, and as a result, the arm drifts downward and the ...
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The cardinal signs of brachial plexus injury then, are weakness in the arm, diminished reflexes, and corresponding sensory deficits. [11] [citation needed] Erb's palsy. "The position of the limb, under such conditions, is characteristic: the arm hangs by the side and is rotated medially; the forearm is extended and pronated.
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