Related Experiment Video
Updated: Jun 10, 2025

06:51
Methods for In Vivo Biomechanical Testing on Brachial Plexus in Neonatal Piglets
Published on: December 19, 2019
6.0K
Brachial and Lumbosacral Plexopathies
1Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama.
Seminars in Neurology
|October 17, 2024
Summary
Plexus disorders affecting the brachial and lumbosacral plexuses can be disabling. Diagnosis involves electrodiagnostic studies and imaging, with treatment focusing on symptom management and rehabilitation.
Area of Science:
- Neuroscience
- Neurology
- Medical Imaging
Background:
- The brachial and lumbosacral plexuses are crucial neural networks transmitting vital sensory, motor, and autonomic signals.
- Disorders of these plexuses can lead to significant disability due to widespread nerve fiber involvement.
Purpose of the Study:
- To provide an overview of brachial and lumbosacral plexus disorders.
- To discuss diagnostic modalities and treatment strategies for plexopathies.
Main Methods:
- Review of electrodiagnostic studies for confirming plexus lesions.
- Discussion of magnetic resonance imaging (MRI) and high-resolution ultrasound for visualizing nerve abnormalities.
- Analysis of traumatic and nontraumatic etiologies of plexopathy.
Main Results:
- Electrodiagnostic studies are essential for diagnosing plexus lesions and assessing prognosis.
- MRI is the preferred imaging modality, with ultrasound offering dynamic evaluation.
- Etiologies are limited, encompassing both traumatic and nontraumatic causes.
Conclusions:
- Prompt diagnosis and appropriate management are critical for improving outcomes in patients with plexus disorders.
- Treatment strategies include symptom management, physical rehabilitation, and surgical interventions when necessary.
Related Concept Videos
Spinal Nerves: Plexus I
791
Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
791
Spinal Nerves: Plexus II
522
The plexuses of the lower body include the lumbar, sacral, and coccygeal plexuses, which innervate the abdomen, pelvis, legs, and coccygeal region. These plexuses control the transmission of sensory information and coordinate motor functions of the lower body.
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
522
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
3
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
3
Spinal Nerves: Anatomy
2.2K
Spinal nerves are pivotal conduits in the nervous system, bridging the central nervous system (CNS) with the peripheral nervous system (PNS). These nerves enable a complex communication network between the brain, spinal cord, and the rest of the body, facilitating sensory input, motor output, and autonomic functions.
There are 31 bilateral pairs of spinal nerves, each emerging from the spinal cord through the intervertebral foramina—openings between adjacent vertebrae. These nerves are...
There are 31 bilateral pairs of spinal nerves, each emerging from the spinal cord through the intervertebral foramina—openings between adjacent vertebrae. These nerves are...
2.2K
Somatic Spinal Reflexes
1.8K
Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord.
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
1.8K
Major Somatic Sensory Pathways
912
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
912

