Having pain in my left knee joint when stand up after sitting and cracking sound also feels. I have no pain in continuous but when stand up after a short or long time sitting, i feel pain in left joint knee with cracking sound and on that time I was not able to balance my left leg in moving position due to feeling pain. I feel this situation in night time when going to sleep and trying to bend my leg from straight position to bend or bend leg to straight position.
Please suggest me, what to do............