eight plates

Rickets

- paediatric disorder characterised by deformity and growth retardation

- secondary to defective mineralisation of the growth plate

Osteomalacia

- adult disorder

- defective mineralisation of osteoid

Generation of Vit D

Vitamin D3 ingested and absorbed

- activated by sunlight

Blount's disease

Progressive varus deformity of knees

- secondary to abnormality of medial upper tibial physis

- localised varus & internal rotation deformity

Infantile form

- onset 1-3 years / bilateral

Adolescent form