This mnemonic has been commonly used to recall the differential diagnosis for gracile bones – NIMROD
N – Neurofibromatosis
I – Immobilization (Paralysis)
M – Muscular Dystrophy
R – Rheumatoid Arthritis
O – Osteogenesis Imperfecta (click the link or see below)
D – Dysplasias (Marfan’s syndrome, Homocystinuria)
Osteogenesis Imperfecta: Radiograph of the bilateral lower extremities reveals marked bowing deformities of the femurs, tibias, and fibulas with a background of diffuse osteopenia. The tibia and fibula also have a gracile diaphysis appearance, or overtubulation.
I am a radiology physician from California, USA.
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