Viking quarterback Fran Tarkenton set a one-game passing accuracy record, then suffered a fracture of a leg bone that probably will sideline him the rest of the season, putting a damper on Minnesota's 42-10 thrashing of the Cincinnati Bengals today.

Tarkenton, whose 17-for-18 passing day, a completion percentage of 94, broke the 3-year-old record of 20 for 22 set by the Bengals' Ken Anderson against Philadelphia, was sacked for a 12-yard loss late in the third period. He was carried from the field on a stretcher to the dressing room, then taken to Midway Hospital.

A club spokesman said he suffered a fracture of the fubula, the smaller of the two bones between the knee and the foot. He said Tarketon will be in the hospital "a couple days" and then will be in a cast and on crutches. "It is very doubtful he will be back this year," said Merill Swanson, head of public relations for the Vikings.

Before his injury, Tarkenton had led the Vikings to a 21-10 lead, helped by Chuck Foreman's three touchdown.

Foreman dived one yard for one touchdown, caught a six-yard pass from Tarkenton for another and ripped one yard for a third.

After Tarkenton was injured, the Vikings struck three more times in the fourth quarter behind rookie quarterback Tommy Kramer of Rice.

Kramer, who completed four of six passes, fired a six-yard touchdown pass to Brent McClanahan after the Vikings had grabbed a Bengal fumble 12 yards from the goal line. McClanahan ran five yards for a touchdown minutes later and then Sammy Johnson scored on a one-yard run.