"Woot, I'm home! So, I got into a dust-up with a small white vehicle, and lost badly!" Sam revealed in a lengthy caption.
"Huge props to the gang at Ambulance Victoria, VicPol, The Alfred and The Epworth for putting this Humpty back together again.
"Won't bore you with all the medical stuffski, suffice to say I've been surrounded by a gang of experts, including the Occupational Therapist, who says it's OK for me to go back to work on 'light duties' today!"
In the photo Sam is clearly wearing a neck brace, which he said he will have to keep on for at least another four weeks.
He went on to share some minor details from the car accident that hospitalised him in late June.
Hilde was the one to break news of the collision to Sam's fans at the time, via the Love Your Sister Facebook page.
Now the Eden star has shared these details: "When you've been hit by a vehicle, little or otherwise, it can take a while to un-wonk yourself.
"Full recovery is within my grasp, I've just got a lot more work ahead of me. I feel very lucky to be OK, but I'm worried about what cancer is getting away with whilst I am on the mend."
WATCH BELOW: Samuel Johnson talks to Leigh Sales about Connie
He also called for concerned fans to donate – but not to his recovery.
Sam urged people to give to the Love Your Sister charity, which raises money for cancer research after he and Hilde lost their sister Connie to the illness in 2017.
Ever positive in the face of adversity, Sam signed off with a light-hearted joke.
"In the meantime, I've got a date with a hydrotherapy pool. Be right back! x sambo. Slightly Wobbly Unicyclist," he wrote.
Fans flooded the post with messages of support, wishing Sam the best in his recovery and urging him to take his time to heal.
This story originally appeared on our sister site, Now To Love.