Sir i am chandra shekar, 3 years ago i fell down and after Mri scaning it showned me that i have a complete acl tear.. I continuing with physiotherapy frm them.. Sometimes i feel instability in my knee. And i got a police departmental job now, i have to do a hard police training for 9 months with a 6km run per day. I consult a physiotherapist and he said that u can do running by doing proper physiotherapy to your leg. Then what i have to do now ? If i go for training that means 6km per day for 9 months, then sill it be dangerous to my leg ? If i go for surgery how long it will take to recover completely and do my police training ?