I twisted my knee playing football. the pain occurs when i rotate my knee left to right and when i bend it too much, its weaker. what have i done?

KNEE PAIN: Knee injuries are a combination of sprains (injury to ligaments connecting bones to each other) & strains (injury to tendons connecting muscles to bones). First treatment R.I.C.E. (rest, ice, compression w/ ace bandage, elevation). If competing at a high level or if RICE not successful; consult trainer/physician prior to resuming training or competition. INBOX me for more in depth assessment.