Muscle & nerve
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The aim of this study was to use ultrasound to measure the cervical nerve roots in normal children to determine normal reference values. ⋯ Normal reference ranges of the cervical nerve roots in children of different ages were established, and can serve as the basis for measurement in future studies.
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Detailed morphological features of the peripheral nerves could improve the diagnostic sensitivity in some polyneuropathies. In this study we aimed to establish multiple-site, cross-sectional area (CSA) reference values for peripheral nerves of upper extremities in a healthy Chinese population. ⋯ CSA was not uniform along the length of the median and ulnar nerves. The multiple-site reference values could be helpful for investigating polyneuropathies in the Asian population.
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In this study we tested the hypothesis that fascicular constrictions (FCs) of the median nerve proximal to the elbow joint characterize anterior interosseous nerve syndrome (AINS). ⋯ AINS is a noncompressive neuropathy characterized by median nerve FCs in the arm.
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After traumatic nerve injury, neuromuscular junction remodeling plays a key role in determining functional outcomes. Immunohistochemical analyses of denervated muscle biopsies may provide valuable prognostic data regarding clinical outcomes to supplement electrodiagnostic studies. ⋯ Two-photon microscopic assessment of neuromuscular junction integrity and motor endplate morphometry in muscle biopsies provided evidence of partial sparing of muscle innervation. This finding supported the clinical judgment that eventual recovery would occur. With further study, this technique may help to guide operative decisionmaking after traumatic nerve injuries.
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The objective of the study was to determine the reference values for cross-sectional area (CSA) of the nerves in healthy subjects between the age of 2 and 30 years. ⋯ This study provides normative values for HRU of peripheral nerves in children and young adults. Adult reference values should not be used for children under the age of 14 years.