Capsular ligament involvement in the development of mechanical hyperalgesia after facet joint loading: behavioral and inflammatory outcomes in a rodent model of pain.

@article{Lee2008CapsularLI,
  title={Capsular ligament involvement in the development of mechanical hyperalgesia after facet joint loading: behavioral and inflammatory outcomes in a rodent model of pain.},
  author={Kathryn E. Lee and Martin B. Davis and Beth A. Winkelstein},
  journal={Journal of neurotrauma},
  year={2008},
  volume={25 11},
  pages={
          1383-93
        }
}
Whiplash injury can produce pain in the neck, arm, and hand, and has been associated with inflammation. However, the relationship between inflammatory responses and pain symptoms remains unknown, hindering the development of appropriate therapeutics for whiplash symptoms. Two joint loading paradigms were used separately in an established rat model of painful cervical facet joint distraction to apply: (1) gross failure, and (2) subfailure distraction of the facet capsular ligament. Behavioral… 

Figures and Tables from this paper

Joint distraction magnitude is associated with different behavioral outcomes and substance P levels for cervical facet joint loading in the rat.
Repeated High Rate Facet Capsular Stretch at Strains That are Below the Pain Threshold Induces Pain and Spinal Inflammation With Decreased Ligament Strength in the Rat.
TLDR
Mechanical, physiological, and neurological findings demonstrate that repeated loading of the facet joint even within physiologic ranges of motion can be sufficient to induce pain, spinal inflammation, and alter capsular mechanics similar to a more injurious loading exposure.
Simulated whiplash modulates expression of the glutamatergic system in the spinal cord suggesting spinal plasticity is associated with painful dynamic cervical facet loading.
TLDR
The results suggest that the spinal glutamatergic system may potentiate the persistent behavioral hypersensitivity that is produced following dynamic whiplash-like joint loading; chronic Whiplash pain may be alleviated by blocking mGluR5 expression and/or enhancing glutamate transport through the neuronal transporter EAAC1.
The Physiological Basis of Cervical Facet-Mediated Persistent Pain: Basic Science and Clinical Challenges.
TLDR
In vivo models of cervical facet injury that reproduce clinical pain symptoms have been developed and used to define the complicated and multifaceted electrophysiological, inflammatory, and nociceptive signaling cascades that are involved in the pathophysiology of whiplash facet pain.
The Interface of Mechanics and Nociception in Joint Pathophysiology: Insights From the Facet and Temporomandibular Joints.
Chronic joint pain is a widespread problem that frequently occurs with aging and trauma. Pain occurs most often in synovial joints, the body's load bearing joints. The mechanical and molecular
Lumbar Facet Joint Compressive Injury Induces Lasting Changes in Local Structure, Nociceptive Scores, and Inflammatory Mediators in a Novel Rat Model
Objective. To develop a novel animal model of persisting lumbar facet joint pain. Methods. Sprague Dawley rats were anaesthetized and the right lumbar (L5/L6) facet joint was exposed and compressed
Defining Multi-Scale Relationships Between Biomechanics and Neuronal Dysfunction in Ligament Pain Using Integrated Experimental and Computational Approaches
TLDR
Studies in this thesis show that localized collagen disorganization is associated with excessive network-level reorganization and fiber-level stretch using network analysis and finite element-based modeling, and establish the role of collagen networks and fibers in translating macroscopic ligament stretch in to neuronal pain signals.
Detection of Altered Collagen Fiber Alignment in the Cervical Facet Capsule After Whiplash-Like Joint Retraction
TLDR
The identification of altered fiber alignment in this ligament following retraction without any tears implicates the whiplash kinematic as a potential cause of microstructural damage that is not detectable using standard clinical imaging techniques.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 99 REFERENCES
In vivo cervical facet capsule distraction: mechanical implications for whiplash and neck pain.
TLDR
Results suggest that facet capsule strains comparable to those previously reported for whiplash kinematics and subcatastrophic failures of this ligament have the potential to produce pain symptoms and alter one element of nociception.
An Intact Facet Capsular Ligament Modulates Behavioral Sensitivity and Spinal Glial Activation Produced by Cervical Facet Joint Tension
TLDR
Results suggest ligament tension may be required to produce pain from facet joint loading, and further studies of other cellular responses are needed to define the mechanisms of painful facet joint injury.
Neural response of cervical facet joint capsule to stretch: a study of whiplash pain mechanism.
TLDR
Investigating the proposed capsule strain injury mechanism of whiplash pain using neurophysiologic methods demonstrated that the receptors on the joint gap were more strain-sensitive, with significantly lower strain thresholds compared to the rostral and caudal regions.
Transient Cervical Nerve Root Compression in the Rat Induces Bilateral Forepaw Allodynia and Spinal Glial Activation: Mechanical Factors in Painful Neck Injuries
TLDR
Results imply a force threshold exists less than 10 gf for persistent pain symptoms following transient cervical nerveroot compression and suggest that spinal glial activation may be related to behavioral sensitivity and may modulate cervical nerve root mediated pain.
Use of botulinum toxin-A for musculoskeletal pain in patients with whiplash associated disorders [ISRCTN68653575]
TLDR
A prospective, randomized, controlled clinical trial to assess the efficacy of Botox in reducing pain and to improve the cervical spine range of movement in whiplash associated disorders.
Central Hypersensitivity in Chronic Pain After Whiplash Injury
TLDR
The authors found a hypersensitivity to peripheral stimulation in whiplash patients, which resulted from alterations in the central processing of sensory stimuli (central hypersensitivity), and was not dependent on a nociceptive input arising from the painful and tender muscles.
...
1
2
3
4
5
...