Shortly after my injury about 17 years ago I experienced numbness/pain in my left foot and toes. It feels like it is in the bone and travels around some. They checked me for sciatica then but the tests were negative.
Now just in the last month I have had several jolts to my right knee, right in the center, just above the kneecap. It feels sorta like an electrical shock, very severe and sudden, does not appear to be in the joint. Twice it actually was so bad that I just let myself fall down to the ground , another time was the same but I just put all my weight leaning on a walking stick which sunk 6" into the ground.
When it happens I have never been doing anything unusual, just walking, no twisting or jumping . It just comes from nowhere and in a couple seconds there is no more pain or stiffness or anything.
Does this sound like sciatica? Or any other ideas what it could be??