Hm, you may have pinched the vein. This is limiting the amount of blood getting through and could be causing this pain and numbness.
My doctor sats I pinched the nerve or something somewhat like that
Have you been cutting yourself with a blunt knife?
Serious. Buisiness.
Try your right knee hurting like a bitch.
Had my left knee like that when I pulled a tendon in it. I had to wear a brace for about 5 months and had to use the elevator at school.
Try having a severe growth plate slip in you're hip. I had to get a screw put in my bone through surgery, had to be on crutches for 6 weeks. After that I wasn't allowed to play sports, jump, or even run for 8 months.Now that stuff sucks.