The bodies of spine are biconcave and are called "codfish spine" most commonly seen in:
Codfish Veebra is seen in 1. Osteoporosis > Osteomalacia 2. Sickle cell disease 3. Hereditary spherocytosis 4. Homocystinuria 5. Renal osteodystrophy 6. Osteogenesis imperfecta 7. Gaucher's disease
Scurvy
Osteomalacia
Fluorosis
Hyperparathyroidism
Metabolic Disorders of Bone