The England and Wales Cricket Board said "tissue contributing to anterior impingement" had been removed.

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Rodriguez had surgery on Jan. 16 to repair a torn labrum and reshape a bone to alleviate an impingement.

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Dr Gregory said there was a basic three-step procedure for dealing with the effects of an ankle bone spur, technically called a "posterior impingement".

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He received a cortisone injection in his right shoulder for an impingement last month, then felt neck discomfort during a bullpen session on March 25.

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He missed a start March 21 because of a shoulder impingement and missed another turn in the rotation this week after experiencing neck pain during a bullpen session Monday.

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New York's remaining rotation includes left-hander Jonathon Niese and righties Matt Harvey, Dillon Gee, Jeremy Hefner and Shaun Marcum, who has been sidelined since March 16 because of a shoulder impingement and neck discomfort.

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