 Hello, I'm Dr. Sunil Kinney, consultant joint replacement and arthroscopy surgeon at Manipal Hospital's Bangalore. The scenario can be explained in two different ways. So, ligament injuries without surgery and ligament injury healing after surgery. So, if the doctor has advised for ligament injury treatment without surgery, then it would usually take about at least a minimum of six weeks for the healing to occur. This is mostly in terms of the medial collateral ligament injuries which are usually treated without surgery. So, we advocate bracing and subsequent physiotherapy after which the ligament kind of scars down and the doctor reassesses at the end of six months. So, for injuries such as these which are non-operatively managed, it would take about six weeks to three months for the ligaments to heal. For post-op scenario, wherein such as an ACL injury or a medial collateral ligament injury, which we operate, it would take probably about six weeks to three months for the healing to start and to progress considerably. For an endocrine cruciate ligament or an ACL injury, the injury process would take about six weeks to three months for it to heal, although the graft healing would take up to about nine months to one year. That's the reason we advise patients to restart any sporting activities only after about nine months to one year because the full time to healing for the graft in the tunnel would take probably approximate up to one year. The most common injury is the anterior cruciate ligament or the ACL injury. So, when patient comes with an ACL injury, it's very important to determine two things. Number one, clinically whether he's stable or unstable. And second one is what the MRI findings which we usually advocate show. So, if the patient is stable in the sense, the patient does not have any symptoms of the knee giving way or the knee being wobbly, especially while doing stairs or certainly turning around. That indicates that the knee is relatively stable. But in patients who have got complete tears of the anterior cruciate ligament, they usually complain of instability. That is, it says that the knee gives way, especially during running or even climbing stairs. This also has to be correlated with the MRI feature. Most of us get MRI for a suspected ACL injury. The injury can again be an incomplete tear as seen on MRI or a complete tear which is seen on MRI. All this has relevance when we only team it up with the clinical scenario. So, patients who don't have instability or with the partial ACL tear can be observed or treated with non-operative treatment with bracing and subsequent physiotherapy. And then followed up. So, if these patients are stable, then they can be managed as such. If the patients develop any instability during the course of treatment, that could be an indication for surgery. Whereas for a patient who comes with complete ACL tear and with instability, especially young patient, that would be an indication for an arthroscopic anterior cruciate ligament reconstruction.