Six-year-old Adam King, who inspired people with his virtual hug on last year's Late Late Show Toy Show is recovering at home after suffering a femur fracture over the weekend.
Adam, from Killeagh Co Cork, was born with osteogenesis imperfecta type 2, which causes brittle bones.
An update on his condition was given on his Twitter page.
"So a little personal post. As you know Adam has brittle bones and sadly he suffered a femur fracture this weekend. Thankfully he does not require surgery this time. He is happy to be home but he is very sore. Please keep him in your thoughts. Thanks to our friends and family for your love and support."
Following his appearance on the Late Late Toy Show, Adam, who has a huge interest in all things space, also received a message from retired astronaut Chris Hadfield who said he was hugely impressed by the youngster.
"The way that you spoke, the way that you treated everybody around you, the way that you showed us the things that you are dreaming of, I found it really inspiring."
Speaking about Adam's aspirations to become part of the ground support staff for manned space missions, Commander Hadfield said: "Capcom is a fascinating job, you are right in the thick of it, it's like a mystery, solving things constantly... you have to rely on your own skill and the skill of the people around you."