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Related Concept Videos

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

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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...
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Spinal Nerves: Plexus I01:22

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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.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
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Peripheral Artery Disease I: Introduction01:30

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Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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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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Peripheral Artery Disease (PAD) is characterized by narrowed arteries that diminish blood flow to the extremities. Effective management of PAD requires an interprofessional approach involving various healthcare professionals. The critical aspects of interprofessional care for PAD patients focus on risk factor modification, drug therapy, exercise therapy, nutrition therapy, critical limb ischemia care, and interventional radiology and surgical procedures.The primary treatment goal for PAD...
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Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
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Related Experiment Video

Updated: Mar 17, 2026

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
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Ulnar Neuropathy in Bicyclists.

E R Burke

    The Physician and Sportsmedicine
    |July 22, 2016
    PubMed
    Summary

    Ulnar neuropathy, or handlebar palsy, is a common bicycling overuse injury causing hand numbness and weakness. Corrective measures like padded gear and proper bike fit can alleviate symptoms, but stopping cycling may be necessary if pain persists.

    Area of Science:

    • Sports Medicine
    • Neurology
    • Orthopedics

    Background:

    • Bicycling is a popular activity associated with various overuse injuries.
    • Ulnar neuropathy, commonly known as handlebar palsy, is a frequent complaint among cyclists.

    Purpose of the Study:

    • To identify the causes and symptoms of ulnar neuropathy in cyclists.
    • To suggest effective management and prevention strategies for handlebar palsy.

    Main Methods:

    • Review of common bicycling-related injuries.
    • Analysis of symptoms associated with ulnar nerve compression.
    • Compilation of recommended preventative and corrective measures.

    Main Results:

    • Ulnar neuropathy presents as numbness, weakness, and loss of hand coordination.

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  • Symptoms typically manifest after several days of cycling.
  • Multiple factors contribute to handlebar palsy, including equipment and posture.
  • Conclusions:

    • Implementing corrective measures can mitigate the risk of ulnar neuropathy.
    • Recommended interventions include padded gloves, handlebar padding, and ergonomic adjustments.
    • Cessation of cycling is advised if symptoms do not improve with conservative management.