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Related Concept Videos

Cross-bridge Cycle01:26

Cross-bridge Cycle

As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
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Chemical Synapses01:26

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Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
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The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...
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Myasthenia Gravis: Overview and Treatment

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Related Experiment Video

Updated: Jul 5, 2026

Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
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Neuralgic amyotrophy.

S Sathasivam1, B Lecky, R Manohar

  • 1Department of Neurology, The Walton Centre for Neurology and Neurosurgery, Lower Lane, Liverpool L97LJ, UK. sivakumar.sathasivam@thewaltoncentre.nhs.uk

The Journal of Bone and Joint Surgery. British Volume
|May 3, 2008
PubMed
Summary

Neuralgic amyotrophy, a rare condition causing severe shoulder and arm pain, muscle weakness, and sensory loss, requires diverse medical expertise for diagnosis and management. This review covers its epidemiology, causes, symptoms, and treatment.

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Area of Science:

  • Neurology
  • Rheumatology
  • Clinical Medicine

Background:

  • Neuralgic amyotrophy is an uncommon disorder.
  • It presents with acute, severe shoulder and arm pain, followed by muscle weakness and atrophy.
  • Sensory loss may occur as pain diminishes.

Purpose of the Study:

  • To provide a comprehensive overview of neuralgic amyotrophy.
  • To detail its epidemiology, aetiopathogenesis, clinical features, and differential diagnoses.
  • To outline current investigations, treatment strategies, and prognosis.

Main Methods:

  • Literature review of epidemiological, etiological, and clinical data.
  • Synthesis of information on diagnostic approaches and therapeutic interventions.
  • Analysis of the condition's natural course and long-term outcomes.

Main Results:

  • The condition's varied presentation necessitates recognition across multiple medical specialties.
  • Understanding the diverse clinical manifestations is key to accurate diagnosis.
  • Effective management involves a multi-faceted approach addressing pain, weakness, and potential recurrence.

Conclusions:

  • Neuralgic amyotrophy, despite its rarity, presents a diagnostic challenge due to its diverse clinical spectrum.
  • Early and accurate diagnosis is crucial for appropriate management and improved patient outcomes.
  • Further research into its pathogenesis may reveal targeted therapeutic strategies.