: This hand was the primary point of contact with the burning Halo device during his 28-second escape . By 2022, it featured thick, visible scar tissue on the back and knuckles .
: To maintain flexibility for racing, he must perform physical therapy exercises roughly every 10 minutes throughout the day . Recovery Timeline
: He underwent successful skin graft surgery on his left hand in late 2021 to improve mobility and tissue health . Ongoing Physical Limitations
: Grosjean has noted that his left hand remains painful for much of the day and is hypersensitive to temperature, particularly cold .