The veteran attacker picked up a muscular problem at the weekend and could miss the upcoming derby as a result of the knock. Roma have received some concering news from the treatment table in the aftermath of their 3-1 Serie A home win over Atalanta on Saturday as attacker Francesco Totti has sustained a muscle injury and faces a spell on the sidelines.The veteran forward featured from the start at Stadio Olimpico, but was forced to leave the pitch after 69 minutes of play after picking up a thigh injury.Totti visited the hospital on Sunday to undergo further examination, and Roma have now confirmed on their official website that a scan has revealed a damaged thigh muscle.It is not yet known exactly how long Totti will be sidelined, but there are doubts as to whether the 35-year-old will recover in time to face rivals Lazio on October 16.Roma have climbed to sixth spot in the Serie A table with eight points from five games following this weekend\'s results.