Adelaide defender Luke Brown will undergo surgery to his left ankle and is expected to be sidelined for up to two months.

Crows High Performance General Manager Matt Hass said the defender would have plantaris surgery in the coming days.

“Luke’s plantaris tendon is limiting his ability to complete the pre-season loads required to prepare for AFL football,” he said.

“He had progressed well with conservative management of an ankle impingement issue through the pre-season but with a return to full training, the plantaris tendon is now causing symptoms that limit him.

“He will undergo surgery to the tendon and ankle this week.”