<prompt> Not a radiological feature of ricketsSplaying of metaphysisCupping of metaphysisSubluxation of epiphysisWidening of metaphysis  <response>: Ans. c Subluxation of epiphysis Ref. RRM 6th ed., 156RICKETS Faulty mineralization of the bone before the fusion of growth plate, i.e., during enchondral bone growth, is known as RICKETS. Histo: zone of maturation has an increase in number of maturing cartilage cells with loss of normal columnar arrangement; zone of preparatory calcification does not form; failure of osteoid mineralization also in shafts so that osteoid production elevates periosteum. Location: Metaphyses of long bones subjected to stress are particularly involved wrist, ankles, knees X-rav features:- Widening and lengthening of growth plate zone of provisional calcification affected is earliest radiographic feature of rickets.- Reaction of periosteum may occur - - Indistinct cortex - Coarse trabeculation - Knees wrists ankles mainly affected - Rickets- Epiphyseal plates widened irregular - Tremendous metaphysis fraying, splaying, cupping - Spur metaphyseal - Additional features: --- Bowing of long bones Genu recurvatum At costochondral junction, epiphyseal widening results in typical rachitic rosary Frontal bossing Scoliosis Slipped capital femoral epiphysis Triradiate pelvis Basilar invaginationEducational point:Dd of Frayed Metaphyses Congenital infections rubella, syphilis Hypophosphatasia Achondroplasia RicketsMnemonic: CHARMS Metaphyseal dysostosis Scurvy The radiological features of scurvy1Spurs Pelkan SpurMetaphyseal spurs projecting at right angles to axis of shaft2Subperiosteal hemorrhagesDiaphyseal subperiosteal hematoma with calcification of elevated periosteum is the sure sign of healing woody-leg3Cortical thinningPencil-thin cortex4Corner sign of ParkeSubepiphyseal infarction or comminution causing mushrooming or cupping of epiphysis55OsteoporosisCharacteristically ground-glass osteoporosis6Rarefaction zone of TrummerfeldMetaphyseal radiolucent zone on shaft side7White line of FrankelMetaphyseal zone of provisionalpreparatory calcification also seen in lead or phosphorus or bismuth poisoning and in healing rickets8Wimbergers signSclerotic ring seen around the low-density osteopenic epiphysis 