Oram ruled out for ten days
He was replaced by Peter Fulton for the Twenty20, but the injury means he will miss the first three ODIs, starting with the match at Chester-le-Street on Sunday. His possible return date would be the fourth match at The Oval on June 25.
Oram is crucial to New Zealand's one-day form, his hard-hitting batting providing power to the middle order, while his bowling can strangle the scoring. He is an injury-prone cricketer, and missed the final Test against England in Napier in March, although managed to play throughout the recent series.
They have a few options in the squad to cover for Oram. Tim Southee has been out of the side since the first Test, while Jeetan Patel provides a second spin possibility, but no one can give the all-round balance that Oram provides.
New Zealand have been hit by a few injuries on their tour. Daniel Vettori cut his spinning finger before the Test series, Daniel Flynn lost two teeth after being hit by a bouncer in the Test at Old Trafford, and Brendon McCullum was unable to keep at Trent Bridge due to a bad back.