Ronda Rousey said she needed 9-1-1 herself after suffering a gruesome hand injury on the set of the Fox drama series "9-1-1."

The former UFC star shared an Instagram picture Tuesday of her mangled middle finger, revealing that the "freak accident" happened while filming the "first take of the day."

Despite severely breaking her finger, Rousey, 32, said she didn't break character, thanks to her past martial arts experience of "never showing pain unless I’m supposed to."

"A boat door fell on my hand, I thought I just jammed my fingers so I finished the take before looking," she recalled. "I know it sounds crazy, but I’m used to live audiences."

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After finishing the scene, Rousey said she was rushed to a hospital, where her suspicions were confirmed – she broke her middle finger on her left hand and severed the tendon.

"They promptly reattached my bone and tendon with a plate and screws," she added.

Despite the setback, Rousey said she was back to work the next day, adding, "I returned to filming…and finished my scenes before returning home to recover."

She said that her finger is healing better than expected. "Modern medicine amazes me, I already had 50% range of motion back in 3 days," Rousey added.

Rousey landed a recurring role on Season 3 of "9-1-1" as firefighter Lena Bosko, a member of the Los Angeles Fire Department.

In typical Rousey fashion, the Olympic judo medalist challenged viewers to look out for the scene where she was severely injured when the show premieres in the fall.

"Tune in to see how well I can act like my finger didn’t just fall off in this upcoming season of @911onfox," she wrote.

The third season is set to premiere on Sept. 23. (Mondays at 8 ET.)

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