Join Date: Oct 2007
Location: Alberta, Canada
• Horses: 0
"Pin firing is a therapy that uses a small, red-hot probe to cause cauterization (burning) of tissue in horses with chronic injuries to produce an abundant, serous inflammatory process. As opposed to other inflammation processes such as infections or bruising, serum has little or no fibrin (clotting material) or cellular content and does not coagulate. Firing causes maximal exudation, or oozing, and minimal tissue degeneration. The flooding of serum seems to flush out any chronic irritation, and it does not displace old scar tissue. "
"The driving idea behind firing is that it makes chronic inflammations acute and allows them to heal. When the body responds to the new injury of firing, which is performed over the old injury, it responds in a different way than the initial injury. I feel that until the condition is made acute, it will not heal. "
In other words, it creates a new injury (though slight) so the leg will heal up faster than just dealing with the old injury alone.
To the OP:
"Pin firing or thermocautery has therapeutic value for certain conditions in the horse. When done properly, the AAEP considers pin firing an acceptable form of therapy."
Please read the link that Sandy2u1 posted, it is a good read.
The lovely images above provided by CVLC Photography cvlphotography.com