A prisoner who fled custody in a violent and brazen escape outside Fremantle Hospital has had eight years added to his jail term.
Convicted armed robber Johnathan Fraser Sedman, 34, was being escorted by two prison guards to a medical appointment in November when Steven Ray Clarke, 30, burst out of a car with a sawn-off shotgun to help him escape.
The officers had their lives threatened and a guard was assaulted during the planned afternoon attack.
Police issued an urgent appeal to the public in a bid to find Sedman, who was back in custody after about three hours on the run.
Sedman had argued he was less culpable than Clarke because he didn't assault the officer.
But WA District Court Judge John Staude said on Wednesday that if anything he bore a greater responsibility as the instigator of the escape and he would have known violence was likely.
Sedman, who has spent most of his adult life in jail, worked for a few months as a chef before he robbed a pharmacy with a handgun in 2016.
The father-of-one was serving a six-and-a-half year sentence for that offence when he staged the bold escape, which Judge Staude labelled a danger to the community and an affront to the institution of justice.
Clarke was also sentenced to eight years in jail.
Sedman will be eligible for parole after serving 12 years and six months behind bars, while Clarke may be released after six years.