The following are our general objectives in this trial:
1. Effect of vitamin D3 on discogenic pain
2. Effect of vitamin D3 on discogenic sensory deficits
3. Effect of posttreatment 25-hydroxy vitamin D3 level
on pain and sensory deficit severity
4. Determining a cut-off level of 25-hydroxy vitamin D3
that is efficient in improving pain and sensory
deficits