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Related Concept Videos

Arteries of the Upper Limbs01:12

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The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
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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.
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Spinal Nerves: Plexus II01:21

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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.
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The external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular...
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Bones of the Upper Limb: Ulna01:15

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The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
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Updated: Mar 31, 2026

Structured Motor Rehabilitation After Selective Nerve Transfers
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Stroke causing pure brachial monoparesis.

J Iqbal1, A Bruno, M Berger

  • 1Neurology Service, Veterans Affairs Medical Center, and the Department of Neurology, University of New Mexico School of Medicine, Albuquerque, NM, U.S.A.

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
|October 22, 2015
PubMed
Summary
This summary is machine-generated.

Sudden arm weakness (brachial monoparesis) is often a stroke in the middle cerebral artery territory. Causes include carotid artery disease, cardiac embolism, and hemorrhage.

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Area of Science:

  • Neurology
  • Stroke Medicine
  • Neuroimaging

Background:

  • Acute brachial monoparesis is a rare stroke presentation.
  • Understanding its underlying causes and typical locations is crucial for timely diagnosis and treatment.

Purpose of the Study:

  • To investigate the clinical characteristics and etiological factors of acute brachial monoparesis caused by stroke.
  • To identify the neuroanatomical location most commonly associated with this symptom.

Main Methods:

  • Retrospective analysis of 15 consecutive patients with acute brachial monoparesis.
  • Comprehensive stroke workup including brain imaging (MRI/CT), carotid duplex, echocardiography, and blood tests.

Main Results:

  • 14 out of 15 patients had strokes in the middle cerebral artery (MCA) branch territory.
  • Ischemic stroke was the most common type (14/15), with causes including carotid artery stenosis (6/14) and cardiac embolism (4/14).
  • Pure brachial monoparesis can be a nonlacunar stroke syndrome.

Conclusions:

  • Sudden brachial monoparesis should prompt consideration of an MCA branch territory stroke.
  • Etiologies are diverse, emphasizing the need for thorough vascular and cardiac investigations.