West Ham midfielder Lee Bowyer is likely to be ruled out for six weeks after dislocating his shoulder during the 6-0 defeat to Reading.
Bowyer had a bad start to 2007
The 29-year-old sustained the injury early in the first half after falling awkwardly under a challenge.
"Lee sustained a dislocation to the right shoulder and he wil be in a brace for around three weeks," Hammers physio Steve Allen told the club website.
"We're probably looking at a spell of six weeks before he's fit to play."
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Bowyer joined the Hammers from Newcastle in June 2006 and has made 17 appearances for the club so far this season.
The midfielder has also played for Leeds and Charlton, and had a brief stay at Upton Park between January and July 2003, making 11 appearances.