In your case ice, rest, pain killers, physiotherapy, braces
etc can be tried. But in all probability, only surgery
will help you regain full function and strength in knee. Please consult your doctor regarding this. 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.