question: I recently fractured my L4 vertebrae. I have osteoporosis. I am a 68 yr. old man. I have had other fractures in the spine in the past that have healed. I have been pretty sedentary for about 3 months. My lower leg and foot are really swollen and red (LEFT). Twice the size of the right foot. But it is a little swollen. Is this a symptom from my back injury?