Craig Bellamy faces another six week lay-off after undergoing a second operation on an abdominal injury.
Bellamy has started just eight times for West Ham since his move
The 28-year-old West Ham striker has made just eight starts since a £7.5m move from Liverpool in July 2007.
Hammers physio George Cooper said: "There is a feeling that if he carries on with slight symptoms they are likely to get worse. The symptoms have to go."
The Wales captain will now miss his country's friendly away in Luxembourg on 26 March.
The problem first flared up in West Ham's Carling Cup win over Bristol Rovers in August and the Hammers initially resisted surgery for a second time.
Bellamy has featured just once since October, coming off the bench in the 1-0 defeat away at Wigan at the beginning of February.