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