There are many problems reported in medical studies from unrepaired vertebral compression fractures (VCFs). Let's start with the first, most common problem--pain. Not everyone has pain with VCFs but most people do. Pain disrupts sleep, decreases function, and is linked with depression.
If the bone collapses, spinal deformity can occur. The result may be a loss of the normal spinal curvatures. The spine starts to curve forward called kyphosis. The patient becomes bent forward. This position reduces the chest and abdominal cavities where the vital organs are located.
The stomach, intestines, lungs, and heart can't function at their best when they are compressed. Pneumonia, constipation, loss of appetite, and reduced cardiac output are just a few problems that can occur. Some of these problems can cause death.