Isolated back pain is frequent. Many causes
- arthritis 
- deformation 
- Muscle or ligament strain (lumbago) 
- osteoporotic fractures 
- disc degeneration 
- infection (spondylodiscitis) 
- spine tumor 
- non-orthopedic problems: kidney and digestive organs 
Modic changes
- Modic 1: disruption and fissuring of endplates and formation of a fibrovascular granulation tissue. Inflammatory stage 
- Modic 2: fatty degeneration of the red marrow and its replacement by yellow marrow. Fatty stage 
- Modic 3: sclerotic stage 
 
             
             
            