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"No, just his knee got sore on him," Kubiak said, "and I'm going to err on that side (of caution) this time of year, so we sent him down for an MRI. He did come out and watch practice, and it gives some other guys a chance to get some reps."
Cushing hasn't missed a game due to injury during his three seasons in the NFL. However, he did undergo surgery after the 2010 season to repair the patella tendon in his right knee and eased into training camp last year.
The Texans didn't disclose which knee was sore, but the Texans likely will take a cautious approach during the six remaining OTA and minicamp practices this offseason. Holding out Cushing will give veteran Bradie James more of an opportunity to grow accustomed to his new teammates and allow Tim Dobbins and Daryl Sharpton to take reps with the first-team defense.