Buttler was forced to leave the practice session to see to the wound, but England will not make a decision on his participation in the fifth and final match against the Black Caps until Saturday morning.??
The 24-year-old has been an integral part of England’s 50-over transformation since the World Cup.
Eoin Morgan’s side have posted four successive scores over 300 for the first time in their history, with Buttler hitting his country’s fastest-ever century in their record 408-9 in the opening match at Edgbaston.
England have a contingency plan if Buttler is unable to play, with Sam Billings – who has been batting at seven during the series – a full-fledged wicketkeeper with Kent.