Figures have shown there were 344 "bed days" used up last year, compared to 182 the year before.
Lothians MSP Gavin Brown said: "This is further evidence of the staggering blight that knife and weapon crime is in the Lothians and the drain it has on NHS Lothian resources.
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Hide Ad"Behind every statistic there is a victim. We need tougher and more honest sentencing."