A Medical Council fitness to practise committee has found a doctor guilty of poor professional performance.
It said Dr Babatunde Bantale failed to carry out an adequate examination of a female patient in the emergency department of Kerry General Hospital after a football injury in June 2010
It said he failed to diagnose a cruciate tear or cartilage damage and failed to refer the patient for a second opinion.
The 42-year-old, who is from Nigeria, was accused of professional misconduct and of poor professional performance in relation to the treatment of the patient, who was not named.
The inquiry earlier heard the allegations of professional misconduct were not being pursued, but the inquiry continued with the case of alleged poor professional performance.
Dr Bantale is in Australia and was not in attendance for the inquiry, but participated in the hearing via phone link.
He told the inquiry that he had worked in Ireland for five years, mostly in accident and emergency departments.
Dr Bantale said he had no bad behaviour and he was very surprised at the allegations.
He said Patient X had not complained of pain, but said she had spasms. He said there was no swelling or tenderness in her knee.
Patient X told the inquiry, via video link, that she was on crutches when she arrived in the accident and emergency department.
She said her knee was giving way and it was clearly swollen.
She said she asked for a second opinion, but Dr Bantale said there was no other doctor available.
Patient X said she went home and two days later went to her GP.
She later had an operation privately in the Bon Secours Hospital in Tralee, which was paid for by the GAA.
Earlier, the inquiry decided against her request to give evidence in private but decided that she would not be identified.
An emergency medicine consultant said that it is not often easy to diagnose a cruciate tear or cartilage damage in the emergency department, especially if a MRI scan is not available.
But Dr Fergal Cummins, Mid-West Regional Hospital, Limerick, said Dr Bantale was guilty of poor professional performance for failing to be suspicious that this could be a diagnosis.
He was giving evidence as an expert witness.
Written complaint
In her written complaint, Patient X said she injured her right leg in a GAA game and attended the accident and emergency department at Kerry General just after midnight on 30 June 2010.
She said Dr Bantale said there was nothing wrong with her leg, it was 'all in her head' and he refused to perform an x-ray.
Later, the patient's GP referred her for an MRI at a private hospital where a tear in her cruciate ligament and other damage was identified.
Patient X said she was unhappy with Dr Bantale's attitude and had to be treated privately.
