Morley was second-choice skipper after Jamie Peacock was ruled out with a knee injury several weeks ago.
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"He could be out for four to six weeks with a knee injury, " said Hill.
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Dooher played in the decider despite having a hamstring problem while O'Neill has a knee injury.
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The 25-year-old Osprey back has not played rugby since suffering a knee injury recurrence in January.
And unlike in January, Peyton Manning wasn't booed when he took a knee this time.
But he returned on 1 October, 24 hours after Wilkinson dislocated a knee cap.
But experienced Cardiff Blues centre Tom Shanklin has declared himself fit after a knee injury.
The difficulties started in 2003 when a knee ligament problem kept him out for nine months.
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Pietersen had also worn a knee brace in practice at various points during the series.
Mitch left the world of competitive surfing behind twenty years ago, because of a knee injury.
Evans, 25, had only just returned from 10 months out with a knee injury.
McCormick left the game with 1:16 remaining after suffering a knee injury and did not return.
Scrum-half Chris Cusiter has already returned to Scotland, having failed to shake off a knee injury.
Ayres had a knee injury and did not play as a senior at Middletown (Del.) High.
Evans returns to full fitness after a few weeks out with a knee injury.
Armagh then suffered a blow when John Toal had to be stretchered off with a knee injury.
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Vickery limped off with a knee injury during his side's 29-19 win over Sale Sharks on Tuesday.
Though his teammates, with Russell Westbrook out with a knee injury, need to give him more help.
Captain Phil Vickery and Tindall were ruled out on Monday with concussion and a knee problem respectively.
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Centre Rob Dewey is also a doubt for Saturday's match after suffering a knee injury against Romania.
The Blackbirds opened the season 0-4 and then lost Boyd to a knee injury after eight games.
Ms. McDonald says the hospital hasn't had a knee or hip surgical site infection for 19 months.
The Samoan international announced his retirement in August after failing to fully recover from a knee injury.
Bellamy came to the Cardiff City Stadium on a season's loan in August nursing a knee problem.
BBC: Craig Bellamy close to full fitness after knee problems
Terry came on as a second-half substitute, having been out for two months with a knee injury.
He was busy now recording separate fragments of her, a knee, a shin, a shoulder, her arms.
Six Nations skipper Chris Cusiter is not included after failing to shrug off a knee injury in time.
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Nadal won the Barcelona Open from 2005-09 but did not play in 2010 because of a knee injury.
Nadal has pulled out of this week's Mercedes Cup clay court event in Stuttgart, citing a knee problem.
Smithies is expected to be out for up two months after undergoing a knee operation earlier this week.
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