Next weekend's UFC event has suffered a blow.
According to Hirschbein, Ladd will find out Tuesday whether she'll require surgery. If so, she's expected to be sidelined for approximately nine months.
According to sources, the UFC is working to find a late replacement to fight McMann but has not yet secured one.
Ladd (9-1), considered one of the best female bantamweights in the world, most recently defeated Yana Kunitskaya via third-round TKO in December. McMann (12-5) is coming off a unanimous-decision victory over Lina Lansberg in January.