He might not have played a senior AFL match yet, but Callum Bartlett's latest ACL injury has proven another cruel blow for the Brisbane Lions.

Bartlett injured his right knee during last week's QAFL match between the Lions Reserves and Aspley and his worst fears were confirmed on Tuesday when scans revealed he had ruptured his ACL.

It was the second such injury the 18 year-old has endured in the past 14 months - but this time it was to his other knee.

In April last year, Bartlett ruptured the ACL in his left knee while training with the Geelong Falcons on the eve of the 2009 TAC Cup season and was forced to undergo a full knee reconstruction.

The Lions overlooked the injury setback last year and took little time in reading Bartlett's name out with the Club's first selection (Pick No.27 overall) at the 2009 AFL National Draft.

The injury delayed the start to Bartlett’s first AFL pre-season campaign with the Lions, but he returned to the field in April this year where he quickly became a valuable contributor for the Lions Reserves.

Bartlett's progression was such that he had been named twice as an emergency for the senior team and the Club was looking forward to injecting his speed and skill into the senior side in the not-too-distant future.

After being considered close to making his senior AFL debut in recent weeks, Bartlett will instead undergo another knee reconstruction which will keep him on the sidelines for the remainder of the 2010 season.