i am not a doctor, but heres what i succest.You shouldnt but on your brace,because your knees swells up ,mabe even more at night and brace locks the circulation inside the knee and makes it to hurt even more.If it is hurting,is swollen ,is blue and red ,even if it is coloured in rainbow coloours, you should still visit a doctor.The things you are saying at down there,that you had 2 MRI-s and nothing was wrong and you had 16 injuries on your knee, you should consult with doctor ASAP.Theres no time to wait,because 16 injuries to knee shows,that theres something seriously wrong with the MRI machine you are using.Ask them,weather they plugged in the machine.Also consult your doctor, because something tells me that injuries are because of some cruciate ligaments injuries,thats way why your knee keeps giving away.
Again.consult a doctor and you will get back to normal for sure.