Terence Williams, 40, was found not guilty of indecently assaulting the victim by touching her breasts.

Crown prosecutor Virginia Jones said the "very invasive and offensive" assault had affected the victim in her day-to-day life.

The 31-year-old, who cannot be named, saw Williams for a second time in 2011 for a sore right heel.

During the consultation Williams placed his ungloved fingers in to her anus after pulling down her pants, offering no explanation for the procedure.

During the trial in the Supreme Court in Launceston he said the probe was to see if she had a deviated spine that was causing her foot pain.

The idea came from a conversation he'd had with his girlfriend who said her GP had examined her rectum for a sore foot complaint.

Williams said this "popped into his head inconveniently" as he was examining his patient.

He had never carried out a rectum examination or studied the procedure as a podiatry student.

Ms Jones took Williams to task over his "cryptic" explanations.

"His explanations are ridiculous, he's downplaying what he did," she said

"He had inserted his fingers in to [the victim's] anus without explaining to her what he was about to do, why he was going to do it and without having obtained her consent to do it."

Eleven members of the six-men and six-women jury believed the Crown's case when it came to the sexual assault.

Defence counsel Charmaine Gibson said the not guilty verdict on the indecent assault implied the jury did not believe there was a sexual nature to his actions. She said while his actions may have distressed the victim they were intended to end her foot pain.

Williams has not worked since the assault and was suspended from practising by the Australian Podiatry Board after the complaint.

The Plymouth University graduate has been getting Centrelink benefits and living in a City Mission unit.

Williams has no prior relevant convictions and no other formal patient complaints, the court heard.

Ms Gibson said he'd suffered several traumatic events in the lead up to the assault.

This included missing his mother's funeral in England, the suicide of a friend, a car crash involving a former girlfriend and being assaulted by his then partner. As a result he was suffering anxiety and depression that may have affected his professional judgment at the time, Ms Gibson said.

Initially an unskilled worker, Williams pursued a podiatry degree, graduating in 2009.

He got a job in Launceston in 2010 through an international recruitment agency.

He was remanded on bail for sentencing on May 13.