"I am very well-pleased that he will remain in jail and that justice will eventually be served for the crimes that he has committed," said Philip Mayfield, 45, who awoke paralysed from the neck down in April 2013 after Duntsch operated on his spine. Duntsch, 44, was arrested July 21 on five counts of aggravated assault causing serious bodily injury and a count of injuring an elderly person. He performed those surgeries at Dallas Medical Centre, South Hampton Community Hospital and University General Hospital. Dallas police said in a search warrant affidavit that he is also under investigation in the botching of at least 10 other patients' surgeries in Plano and Dallas from November 2011 through June 2013. Duntsch "knowingly takes actions that place the patients' lives at risk," police said, such as causing extreme blood loss by cutting a major vein, and then not taking proper steps to correct it. In one case, Duntsch left a surgical sponge inside a man's body. During that same surgery, another doctor forced him to stop operating because of his "unacceptable surgical technique," the affidavit said. Duntsch's medical licence was revoked in December 2013 after the Texas Medical Board found he had a pattern of failing to follow proper procedures before operations or respond to complications that caused at least two deaths.

Prosecutors argued that Duntsch's bail should remain high because he could flee Dallas or harm others if free. They also said he could try to apply again for a medical licence. Before his arrest, Duntsch was living with his parents and grandparents in Denver. "All he has here are his medical peers that have shunned him and the media that is following him around and a whole bunch of victims that he has hurt and his civil and criminal cases," said prosecutor Michelle Shughart. "He has every reason to flee the state." Ms Shughart asked Duntsch's father if his son was trying to get his medical licence reinstated. "I guess that's probably true," Donald Duntsch said. "I knew that was an intention of his at some point, in light of what happened, that he would be able to practise again as a doctor." Duntsch's lawyer, Robbie McClung, argued that his client had no money to flee - he has filed for bankruptcy - and would stay in Texas, particularly because his two young sons live in the state. She also argued he should never have been criminally charged, since he made honest mistakes.

"The oath he took was to be a doctor," Mr McClung told the judge. "He screwed it up. He hurt people he was trying to help." Duntsch has claimed to be a victim of misunderstandings, rival surgeons and personal injury lawyers. He told The Dallas Morning News in a 2014 story about the accusations that "99 per cent of everything that has been said about me is completely false". But in that startling 2011 email to his employee, Duntsch wrote: "how can I do anything I want and cross every disciplined boundary like it's a playground and never ever lose." When the medical board suspended his licence, it said "impairment from drugs or alcohol" affected his ability to treat patients, though the board later said there wasn't evidence that he was impaired during surgeries. Ms Shughart, the prosecutor, sought to show that Duntsch has substance abuse issues. She said Duntsch's friend called his hospital and reported that Duntsch had been up all night doing drugs the night before an operation. The hospital then sent him to rehab, she said.

Donald Duntsch testified that while his son was a college student in Tennessee, the school ordered him to go into rehab. In addition, the elder Duntsch said, his son was arrested last year in Colorado for impaired driving, and he testified that he had been concerned that his son was abusing Ritalin and alcohol. "I know that he uses alcohol, particularly, which was an issue for us in the home, and we talked about it," Donald Duntsch said. "The reality was, as he's been going through this incredibly traumatic time, I think he's probably used some to self-medicate." The Dallas Morning News