LONDON: England all-rounder Andrew Flintoff has suffered a deep vein thrombosis in his right calf following knee surgery, a statement issued on Sunday by the England and Wales Cricket Board (ECB) said.

The 31-year-old underwent an operation after retiring from Test cricket following England's 2-1 Ashes series win over Australia.

Flintoff, who has said he wants to continue his one-day international career, is expected to be out of action for at least six months.

"Andrew Flintoff recently suffered a common complication of surgery, a minor deep vein thrombosis in his right calf," the ECB statement said.

"This will require a simple course of treatment and will not complicate his recovery from surgery."