The problem started when i first had a discomfort while fully bending my left leg it was before 7 to 8 months back. I played Cricket after a very long time i involved in this physical activity all of a sudden without any warm ups, but few days after that i noticed this discomfort. But then i started noticing my left leg getting thinner than my right. I consulted a doctor and an MRI was taken on my left knee the results showed minimal left knee joint effusion and ACL mild grade 1 sprain,This is before 8 months. But now while bending my knee i feel stiffness and it hurts a little when i fully fold my left knee, it only got worse from then. And my left leg is also getting thinner, I've been doing exercises now i have taken physiotherapy for my left knee (IFT) but no improvement yet. I sometimes feel a slight discomfort on my left lower back sometimes. I'm not clearly told why this condition persists or the reason for this problem yet.