Hi --
Got the right knee hurt 3 months ago in my combat class

(sprained collateral and anterior cruciate). Pain and swelling has gone after the first 6 weeks treatment. Had been doing some kind of Interferential current therapy in the past months with limited exercise. Think it doesn't help much as the knee is still very weak. Couldn't walk fast and feeling weak without putting on a knee support

. Some friends suggested I should do some exercises to help the rehabilitation. But there's no such kind of things like sports clinic here(I'm in China). Wondering if I could get some help here on the rehabilitation exercises at this stage.
Any advices would be greatly appreciated. Thanks in advance!!
JIC