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Related Concept Videos

Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

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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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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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Bones of the Upper Limb: Radius01:09

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The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
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Arteries of the Upper Limbs01:12

Arteries of the Upper Limbs

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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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Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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Muscles that Move the Forearm01:16

Muscles that Move the Forearm

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The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints.
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
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Author Spotlight: Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome
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Ulnar nerve paralysis after forearm bone fracture.

Carlos Roberto Schwartsmann1, Paulo Henrique Ruschel2, Rodrigo Guimarães Huyer2

  • 1Universidade Federal de Ciências Saúde de Porto Alegre, Porto Alegre, RS, Brazil; Santa Casa de Porto Alegre, Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brazil.

Revista Brasileira De Ortopedia
|August 13, 2016
PubMed
Summary

Ulnar nerve paralysis from forearm fractures is rare, often caused by nerve contusion (bruising). Differentiating nerve injury types is crucial for appropriate treatment of forearm fractures.

Keywords:
Forearm injuriesPeripheral nerve injuriesUlnar nerve

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Area of Science:

  • Orthopedic Surgery
  • Neurology

Background:

  • Fractures of the forearm bones can rarely lead to paralysis or nerve injury.
  • Ulnar nerve paralysis is an uncommon complication specifically associated with closed forearm fractures.

Observation:

  • The primary cause is typically nerve contusion resulting in neuropraxia.
  • Nerve lacerations and entrapment at the fracture site are critical considerations, especially if symptoms worsen post-reduction.

Findings:

  • Neuropraxia is the most frequent outcome of nerve contusion in these cases.
  • Persistent or worsening neuropraxia after fracture reduction warrants a high index of suspicion for more severe nerve injury.

Implications:

  • Accurate diagnosis and differentiation of nerve lesions are essential for guiding treatment strategies.
  • Prompt identification of nerve damage ensures optimal management and patient outcomes following forearm fractures.