Justice Barr said the force used did not appear to be excessive, describing the actions as low-level physical violence.
He is also believed to have murdered his own eight-month-old sister.
READ: Restraint is only ever used as a last resort in situations where there is a threat to an inmate or staff, said Corrections Minister Robyn Lambley.
Well, she became a porn star taking on the name Crave and leaving behind the family that she felt took her dream livelihood.
An image captured from the shocking video ABC broadcast the 2010 footage this week after a Supreme Court justice upheld a prior ruling that the guards did not use unreasonable or excessive force.
It was not immediately clear what, if anything, provoked the assault or whether the youngster knew his attackers.