ADELAIDE defender Andy Otten is a late addition to the Crows' side for Sunday's encounter with North Melbourne at Adelaide Oval, replacing Alex Keath.

Keath has been ruled out with a hamstring injury.

Otten will play his seventh game of the season, and first since the Crows' round 13 loss to Hawthorn.

It could be a farewell home game for Otten, with the popular 29-year-old off-contract at the end of the season.

Otten has played 104 games for the Crows since being selected with the 27th pick in the 2006 NAB AFL Draft.

Keath's injury means the Crows will be without three key defenders, having already lost star Daniel Talia (calf) and reliable backman Kyle Hartigan (knee).