The sphenoid bone is the most likely cause of your condition. And in connection with the dural membrane. Your leg is 'shorter' (actually its the same length as the other leg most likely) beacause it is being sucked up into the the hip/pelvic portion of the body. The sucking up is because of the dural membrane which is twisting because the cranial sutures in the skull are jammed. It's finally related to the spenoid bone which is also jammed. The shortening of the leg can be caused by a spinal tap also. There are many reasons for it.
You could go and see Dr. Dean Howell who is a specialist in Neural Cranial Restructuring. He revived it from the 30's and then refined it into a very powerful healing modality. It is not for the faint of heart though. or for the faint of pockets because it is a pricey procedure. I have had it done three times as I was suffering from severe whiplash that caused serious compression issues in my neck. The claims made on the website are for real. You will look younger and the symmetry of the head will be quite noticeable. There are many actors that use NCR to achieve better results than plastic surgery. It will solve your leg issue too.