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Cryoanalgesia

Created: 16/9/2005
 
This is use of extreme cold to damage peripheral nerves and provide pain relief that lasts for several months. This technique causes axonal degeneration without epineural or perineural damage, allowing slow regeneration of the axon without neuritis or neuroma formation.

Compressed gas (CO2 or N2O) is passed through a narrow tube and allowed suddenly to expand at its tip. The work done by the gas as it expands results in a temperature drop (Joule-Thomson effect) and is an example of an adiabatic change. Temperatures reach -70oC.

[William Thomson (Lord Kelvin) 1824-1907, Irish born Scottish physicist].

Indications


 Chronic pain syndromes

Chest wall pain
Facial pain syndromes, such as tic douloureux and other non-herpetic neuralgias
Occipital, suprascapular, ilio-inguinal and other specific neuralgias
Facet syndrome - including cervical, thoracic and lumbosacral
Coccydynia
Perineal neuropathies
Phantom limb
Trigger points
Painful neuromas
Painful superficial scars
Chronic low back pain with radiculopathy

 Acute postoperative pain from thoracotomy and inguinal hernia repair

 Cancer pain


ArticleDate:20050916
SiteSection: Article
 
   
    
                                            
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