Stewards have set the date for the resumption of an inquiry into the Queensland Derby fall which resulted in high-profile jockey Corey Brown suffering serious injuries.

Queensland Racing Integrity Commission stewards confirmed the inquiry would resume on October 21 with four jockeys required to attend.

Brown, a dual Melbourne Cup-winning rider, was aboard Lord Arthur who fell at the 300m mark in the Derby at Eagle Farm on June 8.

He suffered injuries to his spine, ribs and lungs and will be out of the saddle for an indefinite period.

New Zealand horse Lord Arthur was euthanised.

An inquiry was opened on the day with evidence taken from several jockeys and then adjourned until a time when Brown was fit enough to attend.

Stewards will call Brown and fellow jockeys Tommy Berry, Matt McGillivray and Tim Clark to give evidence at the inquiry.

Chief steward Peter Chadwick said the priority had been to give Brown time and there had been problems getting all jockeys together.

Meanwhile, jockey Luke Tarrant has been cleared to resume riding after being stood down following a criminal court appearance on drug charges.

Tarrant was stood down indefinitely in mid-August but was cleared to resume this week.

Chadwick said strict terms had been placed on Tarrant's return.