Yesterday I was coming in through our patio door and there is a lip that you have to lift your leg to get in. My foot caught and I fell again ! I have had this happen a couple of other times . My leg is weak and it is hard to lift it . First time was outside on our cement stairs so I was pretty cut up . Second time I have fallen onto the same knee and I have some pretty large bruises. I am getting scared that if I fall again I may either hit my head or possibly break something. Has anyone else had this happen to them. Yesterday was very upsetting just feel so frustrated. Don't cry to often but yesterday felt like I was at the end of my rope. Has anyone had this happen to them because of spinal stenosis or other issues with your lumbar spine problems. My doctor mentioned MS and is sending me to a specialist but I really don't think its that. Thanks for any input some of you might have.