Case report demonstrates high-resolution ultrasonography detecting occult musculocutaneous nerve injury missed by MRI, highlighting its role in guiding successful nerve transfer.
Peripheral nerve pathology may occur due to a number of causes. Physicians rely primarily on the information gained by the non-anatomical tests such as clinical examination, neurophysiological testing, and on clinical history for evaluation and management of peripheral nerve pathologies. Magnetic resonance imaging (MRI) is a favored investigation for the evaluation of peripheral nerve pathologies among the clinicians. We report a case of a traumatic injury to the musculocutaneous nerve causing weakness in elbow flexion, with normal imaging on MRI but diagnosis being made using high-resolution ultrasonography, following which the Oberlin nerve transfer procedure was undertaken, leading to resolution of muscle weakness post-procedure.
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Ghosh et al. (2020) studied this question.
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