<human>: Summarize the given text in a few sentences.

Age: 26

Sex: Male

Height: 5'7"

Duration of complaint: since this morning

Location: Philadelphia/San Jose + knee

Current medications: none

This morning I was back at home for break (Philadelphia) and was playing with a foster puppy and I slipped and my right knee twisted. It twisted sideways as I slipped. 

So far I don't have any swelling. I tried jogging and it's not an issue. When I bend my right knee, it does not hurt but it hurts when I retract/unbend it. I am scared that this is some sort of ligament tear. When I make a (upside down) V shape with my right knee and move it inwards and retract it, there is some pain. When I move it outwards and retract it, there is no pain. 

I just moved to my own insurance through work (Kaiser HMO since I work in the bay area). I will try to see what happens in the next few days and also meet a physician/orthopedic when I get back after the new year.

I am just scared that this will require surgery. So far my symptoms are very small. What should I expect?
<bot>: Twisted knee while playing on a slippery field. There's no swelling. Scared that is might be a ligament tear. But don't see much of the symptoms associated with them.