Related Experiment Video
Updated: Apr 28, 2026
08:16
Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
Published on: March 4, 2014
31.8K
A case report of neuralgic amyotrophy
Jianfeng Sun1, Ji Mao2, Fengfei Zhang1
1Department of Rehabilitation Medicine, Southern Theater Command General Hospital of the People's Liberation Army, Guangzhou, China.
Frontiers in Neurology
|June 7, 2024
Summary
Neuralgic muscular atrophy presents diagnostic challenges due to varied symptoms and unclear imaging. This case study details characteristic signs, imaging findings, and treatments for better clinical understanding.
Area of Science:
- Neurology
- Musculoskeletal Disorders
- Diagnostic Imaging
Background:
- Neuralgic muscular atrophy is a condition encountered in clinical practice.
- Lesions in different brachial plexus branches lead to diverse clinical presentations.
- Lack of clear imaging diagnostic criteria poses challenges for clinicians.
Observation:
- A representative case of neuralgic muscular atrophy is presented.
- The case highlights characteristic symptoms and valuable imaging data.
- The diagnosis and treatment process are shared.
Findings:
- Analysis of characteristic symptoms aids in identifying neuralgic muscular atrophy.
- Valuable imaging data can support the diagnosis.
- Targeted treatment strategies are crucial for management.
Implications:
- Improved understanding of neuralgic muscular atrophy for clinicians.
- Enhanced diagnostic capabilities through symptom and imaging analysis.
- Guidance on effective treatment approaches for this condition.
Related Concept Videos
01:26Cross-bridge Cycle
108.7K
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.
108.7K
01:21Satellite Stem Cells and Muscular Dystrophy
1.7K
Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
1.7K
01:20Myasthenia Gravis: Overview and Treatment
3.7K
Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
3.7K
01:15Myasthenia Gravis: Diagnostic Tests
3.3K
Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
3.3K
01:28Disorders of the Skeletal Muscle
2.2K
The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
2.2K
01:22Myasthenia Gravis ll: Pathophysiology
49
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...
49