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Rick Smith: Jadeveon Clowney diligent in his rehab

Six weeks removed from having had microfracture surgery, Houston Texans outside linebacker Jadeveon Clowney is still working through the relatively early stages of rehab. He can't put weight on his surgically repaired right knee just yet.

Texans general manager Rick Smith offered this update in an appearance on Sirius XM NFL radio:

"That surgery requires a pretty significant amount of time that you are not weight bearing, and then you kind of gotta work yourself back to it. He's been diligent in his rehab. That's the thing he can control right now. He understands that. It's an arduous process for him because he's limited right now in what he can do. There's just a few exercises that he can do to maintain some of the strength in his leg. Once he gets to the point where he can put weight on the leg again and start to really get into a rehab process, I know he's anxious to do that. He's anxious to make the contributions that we all know he's capable of making. Some of the things, the flashes that we saw even in the preseason, it's important to him that he returns to full health so that he can contribute and help our football team."

Clowney suffered a lateral meniscus tear and articular cartilage damage in a non-contact injury he suffered during the first game of the Texans' season. He had arthroscopic knee surgery to repair the injury, and the Texans had hoped that was all that would be necessary. But when the knee wasn't performing properly, they resorted to microfracture.

Microfracture surgery involves poking tiny holes into the knee to increase blood flow and help the cartilage regenerate on its own. The recovery from that surgery is difficult, the rehab is demanding and the No. 1 overall pick of the 2014 draft has a lot of it ahead of him.