Nathan Clark and Stephen Mortin attacked Barbara Dransfield with a baseball bat when they broke into her house in Ashton-under-Lyne, Manchester.
The criminals beat up Barbara, who has a prosthetic leg and uses a wheelchair, because her son, Daniel, 30, owed them £100 for cannabis.
She suffered from a cracked skull, while they made off with only some fishing tackle and a minor amount of money.
They sent her son a series of intimidating messages in the days leading up to the event, with the final one four days before the attack reading: “My guys off to your mam’s now.”
Clark, 24, confessed conspiracy to rob and grievous bodily harm and was jailed for 19 years, while Mortin, 23, pictured with a slight smirk on his face, was sentenced of the same offences and sentenced to 18 years.
Barbara, who has still not fully recovered from the attack almost one year on, sobbed as she spoke about the event following the court hearing.
“That’s all they wanted, money, money, money,” she said. “I kept saying I’ve got none but I was hit again and again.