Georges St. Pierre knee injury update: 'Rush' begins first phase of rehab

UFC Welterweight Champion Georges St. Pierre suffered a knee injury while training for his title fight against Nick Diaz at UFC 143 on Feb. 4, 2012, in Las Vegas. His torn ACL was bad enough to require surgery that will reportedly keep him out for around 10 months.

"Rush" had surgery roughly one week ago and announced at the time that it was a "huge success."

Now, the French-Canadian is already beginning phase one of his rehab. Even laying on his back in bed, "GSP" is working towards a return to the Octagon.

From his Facebook:

"First phase of rehab: in my room, putting in some work with the CPM (Continuous Passive Motion) machine."

Have no clue whatsoever what a CPM machine is or what it's supposed to do? Neither do I. Let's consult Wikipedia to get a better idea of what St. Pierre is doing to get better.

Continuous passive motion (CPM) devices are used during the first phase of rehabilitation following a soft tissue surgical procedure or trauma. The goals of phase 1 rehabilitation are control post-operative pain, reduce inflammation, provide passive motion in a specific plane of movement , and protect the healing repair or tissue. CPM is carried out by a CPM device, which constantly moves the joint through a controlled range of motion, the exact range is dependent upon the joint, but in most cases the range of motion is increased over time.

Sounds nifty.

Currently, there is no timetable for a potential return to the Ultimate Fighting Championship (UFC); however, it's possible that we won't see the promotion's welterweight champion back inside the Octagon for at least 10 months or more.

In the meantime, Carlos Condit and the previously mentioned Diaz will battle for the interim 170-pound belt on Super Bowl weekend to keep the division moving. Upon his return, St. Pierre is expected to face the winner of that bout, or the current interim champion, if the Condit vs. Diaz winner is no longer occupying the top spot.

St. Pierre was bit bad by the injury bug recently -- this latest setback was his second in a span of two months, the first of which forced him out of a title fight against the "Natural Born Killer" at UFC 137 back in October.

Be sure to check out a great breakdown of all the welterweight drama that has plagued one of the UFC's most celebrated divisions in recent months right here.