Two days ago, I felt an excruciating pain on my left knee when I stand from squatting to pick up something. I cant straighten my leg and My friend tried to manipulate but it didnt helpso she stopped so not to worsen the damage. I was rushed to the hospital. Any rotation or slight movement on my leg, I was crying like a baby. Xray was done and my knee was normal. I know if there s a ligamentous or meniscal tear it can t be seen in the xray. The doctor told me that im under observation for 8 hours. I tried to straighten my leg with the help of a nurse, after a few minutes, there was a click sound and totally pain-free. I can move, lift my leg and I can even walk to the toilet.