<s>[INST] The other day I landed on my feet and twisted my knee (I m a cheerleader) and it s felt stepperated and just wrong ever sense, I tumbled on it again tonight and when I got home I stepped on that leg and felt a snaping feeling in my knee and it made like a popping noise, iv never had a single body part swell before and it s got slight bruising oh and the pain radiates down my shin and back of my leg to my ankle [/INST] Hi, Thank you for providing the brief history of you. As the pain is radiating in nature, a thorough neuromuscular assessment is advised. This kind of pain occurs due to pinch of the nerve root in the lumbar spine and radiates down the leg depending upon the dermatome and motor regions. Also, with simple physical therapy, you should get maximum benefits. As per the research, majority of cases recover with physical therapy and have a better functional ability. RegardsJay In Chat Doctor.  </s>