Crazed James MacDonald burst into John and Flora MacPherson’s home with a chainsaw (Image: Iain Ferguson)Get the biggest daily stories by emailSubscribeSee our privacy noticeMore newslettersThank you for subscribingWe have more newslettersShow meSee our privacy noticeCould not subscribe, try again laterInvalid EmailA crazed thug who attacked his ex girlfriend elderly parents with a chainsaw days after she split up with him has been jailed for 12 years.Despicable James MacDonald almost hacked off John MacPherson arm after bursting into the pensioner home and threatening to kill the victim daughter Tracey.The high court heard how the maniac stood in the family living room revving the chainsaw before turning it on 74 year old Mr MacPherson terrified wife Flora.Mr MacPherson tried to save his 63 year old wife and was left with massive injuries as MacDonald attacked him with the saw.John Macpherson almost lost his arm in the attackJudge Lord Boyd heard how the couple told each other they loved one another as John feared he was going to die.His life was only saved thanks to the skills of medical staff.Details of the horror attack emerged last month as MacDonald admitted the attempted murder of Mr MacPherson and other charges.Sentence had been deferred for the court to obtain reports about MacDonald background.Today, at the High Court in Edinburgh , Lord Boyd told the offender how he had no other option but to send him to prison.After hearing from defence advocate Graham Robertson about how his client had expressed remorse for his actions, Lord Boyd told MacDonald that he had inflicted “horrific” injuries on his victim.Attacker James MacDonald with his then partner Tracey MacPhersonPassing sentence, Lord Boyd said: “This was a cruel and cowardly attack on an elderly couple who had done you no harm but had the misfortune of being the parents of the women who had recently been your partner. The injuries that you caused were truly horrific.”In Mr MacPherson case, it was only by the skill of the medical teams at Belford Hospital and Glasgow Royal Infirmary that he survived.”I note that he had to undergo a nine hour operation to reattach his right arm.Chainsaw wielding maniac tried to kill ex elderly dad after being dumped by his lover”The consequences, both physical and psychological, will be with both of Mr and Mrs MacPherson for the rest of their lives.”In Mr MacPherson case he will be left with functional deficits in both upper limbs and hands.”So far as Tracey MacPherson is concerned she escaped physical injury, but I have no doubt that the psychological injury will be particularly acute.”The extent of the injury and suffering that you caused to all your victims is graphically recounted in their victim statements.(Image: Iain Ferguson)”I have read the criminal justice social work report. I am prepared to accept Mr Robertson submission that you are remorseful though I am bound to say that does not come across from the report.