The 18-year-old was seen on a stretcher as he took to his Twitter page to post a message reading, "Little ski accident today. Some bruises and stiches down back and but. Thanks to sun valley doctors for everything."
Patrick later posted a second photo of his injuries, which showed a big gash on his backside, while writing, "My ski accident "living the hurt lifestyle"Lawford."
The Schwarzenegger/Shriver clan is no stranger to hospitalizations due to accidents as, just seven months ago, the former couple's youngest son, Christopher, was rushed to a medical facility in Malibu due to a boogie-boarding accident.