Fiscal depute Alison Reid said the victim in the case was in a relationship with Brady at the time and had been for around two years.
She said the woman had been at home at 9am on July 30 when Brady arrived unannounced and an argument ensued when he accused her of speaking to other men.
When she walked into the kitchen she felt something hit her head, the impact of which made her fall to the floor.
The accused pressed a towel on her head and told her its only a scratch, youll be fine.
She was taken to hospital and was found to have a 6.5cm wound to the top of her head which was closed using seven staples.
Ms Reid said the woman had indicated she had been left with a scar meaning she couldnt wear her hair down without it being visible, and that part of her hair was not growing back.
Brady, a prisoner of HMP Grampian, pled guilty to assaulting his partner to her severe injury and permanent disfigurement.
Defence agent Paul Barnett asked for reports to be prepared. Sheriff William Summers agreed and deferred sentence until December 5.
A north-east man has been warned he faces a prison sentence after being caught with thousands of indecent images of children.
Alan Wightman appeared at Aberdeen Sheriff Court yesterday, where he admitted a pair of charges relating to child pornography.
The 41-year-old, of Eday Gardens in Aberdeen, was caught with 2,426 images on his computer, together with 944, totaling 42 hours and 48 minutes of sick footage.
The court heard that police were met by Wightman’s stunned wife when they raided his home on December 15 last year.
Fiscal Alison Reid said: “The accused was later traced at work and he indicated that the offences were nothing to do with his wife.
“Several pieces of computer equipment were thereafter seized and examined and indecent images of children were found.”
Of the images, 164 were graded as being Category A, meaning they were the most extreme, 391 were Category B and 1,871 were Category C.
Wightman admitted “taking, or permitting to be taken, indecent photographs of children” between November 23, 2013, and December 15, 2017.
And he warned the accused that he faced the “significant prospect” of spending Christmas behind bars.
Sheriff Summers told him: “Given the gravity of these offences there is a significant prospect you will be subjected to a period of imprisonment when you come back to court.”
Defence agent, Stuart Murray, opted not to offer any mitigation until his client returns to the dock for sentencing.