A blinded histologic review suggested that obsidian wounds contained fewer inflammatory cells and less granulation tissue at 7 days.” At 42 days, all wounds were barely detectable, thus precluding scar width analysis. At 21 days, scar width was not different in the two groups. Scar width, however, was significantly less in the obsidian wounds at 7, 10, and 14 days (p < 0.005). Tensile strength of the two wound types was not different at 7, 14, 21, and 42 days.
#Obsidian scalpel no anestesia skin#
Each rat received two parallel 8-cm dorsal skin incisions, one with an obsidian scalpel and the other with a surgical steel scalpel (no. In order to determine if skin incisions made with obsidian were superior to those made with standard surgical steel, wound tensile strength, scar width, and histology were assessed in 40 adult male Sprague-Dawley rats. “There are several anecdotal clinical articles claiming wound healing and scar superiority using obsidian (volcanic glass) scalpels. I realize that this is an old question, but just in case anyone else ever looks at this: Don’t you think the surgeon and the patient should be allowed to make informed decisions regarding the risks and possible benefits of any particular treatment or technique?
Still, I would think that the blades can be used safely if the surgeon is aware of the limitations. The reason for the lack of approval/commercial interest and development is for the reason you stated: that the blades lack lateral stability and are prone to shattering if used incorrectly. Green stated in his e-mail that there was an appreciable difference from his experience. I have a feeling that if incisions were made that would typically leave a permanent scar, then there would likely be an appreciable difference. When neither bridge collapses, you can’t say that there is no difference in the structural stability of wood and steel).
All it says is that neither scalpel left a scar at the end, which would be an inconclusive result (it would be like having two bridges one made of wood and the other made of steel and putting 1 pound on each. As far as the no difference article, I don’t think that the study has shown that there is no difference. He told me that there weren’t any FDA approved obsidian scalpels on the market to his knowledge and that he uses them at his own risk.
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