Disturbing CCTV footage released by WA's corruption watchdog has shown a woman with a dislocated hip being dragged backwards by police, screaming in pain and shouting, "I'm not faking", as her leg hits the stairs.

Key points: The woman was arrested after her daughter was stopped for a breath test

The woman was arrested after her daughter was stopped for a breath test Despite her injuries she had to wait hours for treatment

Despite her injuries she had to wait hours for treatment The CCC found officers mostly ignored her screams and requests for help

During the five hours that the woman — named as Ms Duncan — was detained at the Fremantle Police Station, she made calls for help and shrieked in pain, but the officers responded with comments like: "Is she having an orgasm or what?", "Tone this whole act down" or "You're just drawing this out mate".

Within several hours of Thursday's public release of the vision, and the report by the Corruption and Crime Commission (CCC), Police Commissioner Chris Dawson apologised for the behaviour of his officers and revealed potential legal action.

"The lady concerned should have been taken to hospital. That did not occur and for that I'm sorry," he said.

"Eleven officers are facing disciplinary proceedings and I'm aware that there is some civil litigation."

Mr Dawson also confirmed that another police officer — who had been responsible for many of the taunts in the CCTV footage — had been stood aside from operational duties and asked to show why she should remain in the police force.

Ms Duncan and her daughter were coming home from a New Year's Eve party when her daughter was breath-tested and found to be over the limit.

The CCC found multiple failings by police officers in their treatment of the woman.

Police refused Ms Duncan's request to be breath-tested so she could drive home, resulting in a scuffle which led to her dislocated hip.

Ms Duncan was detained at the station for five hours, but only because she was unable to stand to be fingerprinted. Her requests for medical help and another drink of water were only met when new officers arrived as part of a shift change.

The incident, from New Year's Day in 2017, is detailed in the CCC report which found the officers collectively responsible for a form of misconduct concerning unlawful, oppressive and unjust action.

'So many failures by many officers'

The investigation into the incident was prompted by a complaint by Ms Duncan.

It also found the officers failed to comply with police procedures and policy to allow people to access medical treatment.

"There were so many failures by many officers to afford Ms Duncan timely medical attention, that it is pointless for the commission to form an opinion of misconduct in respect of any one individual," the report stated.

CCC Commissioner John McKechnie said the CCTV footage was confronting — with the unpixellated version showing Ms Duncan's face contorting in pain as she was dragged upstairs into the station.

Mr McKechnie said he was shocked that the police officers had not thought Ms Duncan was in pain or tried to help her.

"The right to medical treatment in custody is not a gift to be offered out from time to time," he said.

"It is a statutorily enshrined right that everyone has and no member of the community should be treated like this."

It has also emerged the officer who has been stood aside was also named in a CCC report released three weeks ago.

An auxiliary police officer at the time of the two incidents investigated by the CCC, she was accepted into a recruit squad at Joondalup Police Academy on November 13, 2017, just days before Ms Duncan's complaint was received.

Officers drag a woman identified as Ms Duncan through Fremantle Police Station. ( Supplied: CCC )

The earlier CCC report — which was on an investigation into an incident in which a man was punched seven times in the head by a police officer in the High Street mall in Fremantle on September 3, 2017 — found the officer's behaviour towards the arrested man reflected poorly on her, but she had acknowledged it was wrong.

The report said she told the man while he was in the Fremantle Police Station: "You're the one that kicked me in the head and you kicked another police officer in the head, so we've kicked the shit out of you".

Charges dropped

Despite her physical injury, Ms Duncan was charged with refusing to provide personal information.

A court later acquitted her of that charge and another of assaulting police.

The incident occurred just two weeks after the WA coroner criticised the "inhumane" treatment by police of Aboriginal woman Ms Dhu, who died in police custody at South Hedland.

The report said that as a result of the Ms Dhu inquest, police should have had a "heightened awareness" of their responsibilities in caring for people suspected of having medical problems.

Both Mr McKechnie and Mr Dawson acknowledged the substandard conditions of the Fremantle Police Station, which could only be entered via stairs and did not have appropriate "lock-up" facilities, and said it was up to the WA Government to upgrade it.

"Any lock-up or offender management area should not have to have officers having to manhandle or escort people upstairs," Mr Dawson said.

The Police Minister has been contacted for comment.