The National Registry of Exonerations recently issued its 2017 report. Of the 139 exonerations they added to the registry in 2017, 21% were for sex crimes, not counting the two for registration crimes.
About half of all the exonerations were based on the conclusion that no crime had been committed (as opposed to the finding that the exoneree was not the perpetrator). Eleven of these were child sexual abuse convictions.
The original path is: