Symptoms for two years right leg gives out,,, no pain or numbness mri of knee just mild arthritis mri spine. ..1cm lesion at L1 1 Month now. Constant smell smoke 3 months of constant buzzing in ears waiting to May19th for skull mri?

Nerve issues. when your leg senses danger.. i.e. knee cartilage or nerve impingement the muscle "freeze" and the leg gives out.I first experienced this when i had knee arthroscope and when i woke up my leg was paralyzed. not really but my quad would not lift my leg.. It sensed the disruption in the knee. A protective mechanism.. You need to know where the sensing mechanism is.. knee or back. Sounds like back.