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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
Nociception01:44

Nociception

Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...
Degenerative Disc Disease ll: Pathophysiology01:23

Degenerative Disc Disease ll: Pathophysiology

The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...

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Related Experiment Video

Updated: Jul 15, 2026

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats
08:09

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats

Published on: May 20, 2020

[Osteoarthritis and pain].

Gülseren Akyüz1, Elif Bulak

  • 1Marmara Univeristy Faculty of Medicine, Dept. of Physical Medicine and Rehabilitation, Istanbul, Turkey.

Agri : Agri (Algoloji) Dernegi'Nin Yayin Organidir = the Journal of the Turkish Society of Algology
|April 26, 2007
PubMed
Summary

Osteoarthritis (OA) pain is complex, influenced by more than just local joint issues. Understanding these diverse pain mechanisms is key to developing effective treatments for this common aging-related condition.

Area of Science:

  • Gerontology
  • Rheumatology
  • Pain Medicine

Context:

  • Osteoarthritis (OA) is a prevalent health concern in the aging population.
  • Pain and stiffness are the primary symptoms experienced by individuals with OA.
  • The precise pathophysiology of OA remains incompletely understood.

Purpose:

  • To explore the multifaceted nature of pain mechanisms in osteoarthritis.
  • To highlight the uncertainty surrounding the exact pathophysiology of OA pain.
  • To emphasize the need for a comprehensive understanding of OA pain.

Summary:

  • OA pain is not solely attributed to local joint pathology.
  • Neurologic, neuromuscular, and psychosocial factors significantly influence OA pain perception.
  • A singular mechanism does not explain the emergence of pain in OA.

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Assessment of Knee Hyperalgesia in Mice using Pressure Application Measurement
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Assessment of Knee Hyperalgesia in Mice using Pressure Application Measurement

Published on: June 13, 2025

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Last Updated: Jul 15, 2026

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats
08:09

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats

Published on: May 20, 2020

Assessment of Knee Hyperalgesia in Mice using Pressure Application Measurement
04:22

Assessment of Knee Hyperalgesia in Mice using Pressure Application Measurement

Published on: June 13, 2025

Impact:

  • Improved understanding of OA pain mechanisms can guide the development of more effective therapeutic strategies.
  • This research may lead to novel treatments that address the complex origins of osteoarthritic pain.
  • Further investigation into OA pain pathways could enhance patient outcomes and quality of life.