Hi! In all probability you have injured the menisci in the knee—either the medial or the lateral depending on the site of pain. Meniscii if torn or injured, result in joint instability—that is you are not confident the knee joint will take your weight. Often the person feels a popping sensation on moving the joint. It can also be tendinitis due to inflammation of tendon at the knee joint. Since you had tendon injury 4 years back, this time too it could be a tendon troubling you. Hopefully the MRI will explain the cause of your pain. Meanwhile please rest your knee and avoid weight on it. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.
THANK YOU MY M R I CAME BACK I HAVE A BAKERS CYIST BACK OF KNEE GOING DO A FOLLOW UP WHERE I HAD MY KNEE SURGERY BUT IT NO TORE TENDONS OR LIGMENTS THANK YOU