More than a decade after she was injured in a fall from a platform on the stage of the Metropolitan Opera while singing in a production of “Faust,” the veteran mezzo-soprano Wendy White has settled her lawsuit against the company.

Ms. White, who says she suffered nerve and muscle damage that prevented her from singing professionally after the accident in 2011, had been expected to return to court this month. But she recently reached a deal with the Met and a scheduled trial was called off. Neither side disclosed details.

“Under the terms of the confidential agreement we’re not permitted to comment,” the Met said in a statement. A lawyer for Ms. White declined to comment.

The settlement brings to an end one of the longest-running legal disputes in the Met’s 141-year history. The case dragged on amid rounds of legal filings and appeals — and efforts by New York State lawmakers to help Ms. White. She was injured during the Dec. 17, 2011, performance of Gounod’s opera about selling one’s soul to the devil while singing the role of Marthe.

Ms. White was walking from a backstage staircase to an elevated platform onstage when a piece of scenery broke and the platform collapsed. She fell eight feet. She did not break any bones, but was taken to the hospital for injuries.

The Met said at the time that her injuries did not initially appear to be serious. But Ms. White, who sang more than 500 performances at the Met after making her debut as Flora in Verdi’s “La Traviata” in 1989, never appeared on its stage again.