If the fracture is caused by a sudden, forceful injury, you will probably feel severe pain in your back, legs, and arms. You might also feel weakness or numbness if the fracture injures the nerves of your spine. If the bone collapse is gradual, such as a fracture from bone thinning, the pain will usually be milder. There might not be any pain at all until the bone actually breaks.
In very severe compression and spinal fractures, parts of the back of the vertebral body may actually protrude into the spinal canal and put pressure on the spinal cord. Fortunately this is not a common occurrence. READ MORE