Schwarzenegger, 73, posted a picture of himself giving a thumbs up from his hospital bed at the Cleveland Clinic, and thanked medical staff there. The actor, who was born with a heart defect, underwent emergency open-heart surgery in 2018 to replace a pulmonary valve.
Schwarzenegger became one of the world's best known action movie stars in the 1980s with films including "Conan the Barbarian" and "The Terminator," and comedies such as "Twins." In 2003 he was elected governor of California and championed environmental policies. After ending his term in 2011, he returned to movies, appearing in "The Expendables 2," as well as a sequel to "The Terminator."