Adelaide defender Andrew McPherson is facing a delayed start to his pre-season program after going under the knife to mend a historic knee injury.

McPherson, 23, had surgery on a niggling posterior cruciate ligament (PCL) injury that saw his third season at West Lakes come to a close in July.

The stopper had originally embarked on a rehabilitation program to help build strength in the joint, however, after reporting pain, McPherson was sent for a second assessment.

Crows' fitness boss Darren Burgess stated that the surgery had been a success and that McPherson would be back on track soon enough.

โ€œAndrew's rehabilitation had been progressing but he was still reporting some knee pain and this procedure will give him the best chance to be available for the start of the season,โ€ Burgess said on Friday.

โ€œIt's expected he will return to running in 5-7 weeks and still be able to complete a significant amount of the pre-season going into 2023.โ€

Although McPherson had been delisted by Adelaide earlier this month, the Crows have since committed to redrafting the Woodville-West Torrens product during the upcoming rookie draft.

McPherson has worn the club's tri-colours on 28 occasions since making his AFL debut against West Coast during the COVID-shortened 2020 season.