Graham Onions ruled out of the first Test against Bangladesh with a back injury

Graham Onions has been ruled out of the first Test against Bangladesh with a back injury.

The England seamer missed the three-day warm-up match against Bangladesh A after suffering a series of back spasms, although an MRI scan later revealed no structural damage.

Onions had bowled in the nets during that game as he attempted to prove his fitness, however Andy Flower, the England coach, later revealed he had struggled to overcome his injury.

Stuart Broad remains a doubt and will undergo a rigorous examination with Huw Bevan, England's fitness trainer, today. If he comes through that without a recurrence of the spasms that he has suffered, he will be passed fit for the first Test, which gets underway on FridayBroad's presence is essential for the balance of the England side, with Jonathan Trott expected to open the batting ahead of Michael Carberry in a side containing five, rather than six, specialist batsmen.

Should Broad fail to prove his fitness, Flower may hand Steven Finn his Test debut. The 20-year-old seamer only arrived in the country on Saturday as cover but he caught the eye against Bangladesh A and may have leapfrogged the likes of Liam Plunkett and Ajmal Shahzad.

"I wouldn't rule Finn out," Flower said. "He's been added to the party and he's a contender for selection.He's bowled with pace on a slow pitch and bowled with accuracy; he's quite a good prospect."

James Tredwell is also in contention after taking eight wickets against Bangladesh. "He's [Tredwell] got a bit of confidence now and, if we decided to play two spinners in the Test, he's feeling good about himself," Flower added.