<prompt> Fraying and cupping of metaphyses of long bones in a child does not occur in:RicketsLead poisoningMetaphyseal dysplasiaHypophosphatasia  <response>: B i.e. Lead poisoning Remember : Lead poisoningQ Bismuth, Arsenic, P, mercury fluride, radium also, Radiation Hypervitaminosis D leads to solitary dense metaphyseal band not cupping fraying. Causes of Cupping Fraying of metaphysis Metaphyseal Cupping Metaphyseal Fraying RicketsQ with widening fraying of growth plate 1. RicketsQ HypophosphatemiaQ 2. HypophosphatemiaQ Dysplasias of bone - eg achondroplasia, pseudochondroplasia, metatropic dwarfism, diastrophic dwarfism, chondrodysplasias 3. 4. Copper deficiency Chronic stress in the wrist of young gymnasts with asymmetrical widening of distal radial Scurvy growth plate metaphyseal sclerosis Trauma Normal distal ulna of proximal fibula 