Karen Perry claims she was seated in the disabled section at the Zac Brown Band's Fenway Park concert in Boston, Massachusetts, in August last year, when the singer left the stage and walked towards fans.
Devotees pushed forward to get close to the star and Perry claims security staff were ill-equipped to control the surging masses, reported TMZ.
One of the guards lifted a metal gate next to the disabled fan, pushing it into her armpit and leaving her so badly injured she can no longer use her white cane to navigate.