Outlines requirements and time allcaion Basic changes 1、Osteoporosis 10min It is a common metabolic disorder of bone characterized by qualitatively nommal but quantitatively deficient bone. .It can be divided into generalized,regional,and localized types and accompanies a variety of disease processes. Radiographic manifestations of osteoporosis include changes in radiolucency trabecular pattem.and shape or vertebral bodies in the spine (wedge-shaped vertebrae.compressed vertebrae.fish vertebrae).Schmorls nodes.acute and insufficiency fractures and bone bars(reinforcement lines) 2、Osteomalacia 15min which is a group of disorders resulting from inadequate or delayed mineralization of osteoid in mature cortical and spongy bone. Osteomalacia is characterized by abnormal quantities of osteoid coating the surfaces of trabeculae and lining the haversian canals in the cortex (osteoid seams). Loosers zones or Milkmans pseudofractures are strongly suggestive but not diagnostic of osteomalacia.Frequently osteitis fibrosa cystica is superimposed on the lesions of osteomalacia 3、Osteosclerosis 15min Which is an abnormal hardening or increased density of bone on radiographs Osteosclerosis may accompany a great variety of disorders,including hyperparathyroidism or renal osteodystrophy.osteoarthritis,sickle cell anaemia,Pagets disease,systemic mastocytosis,skeletal metastasis myelofibrosis,oxalosis,leukaemias and osteomyelitis. Outlines, requirements and time allocation Basic changes 1、Osteoporosis ⚫ It is a common metabolic disorder of bone characterized by qualitatively normal but quantitatively deficient bone. ⚫ It can be divided into generalized, regional, and localized types and accompanies a variety of disease processes. ⚫ Radiographic manifestations of osteoporosis include changes in radiolucency, trabecular pattern, and shape or vertebral bodies in the spine (wedge-shaped vertebrae, compressed vertebrae, fish vertebrae), Schmorls nodes, acute and insufficiency fractures and bone bars (reinforcement lines). 2、Osteomalacia ⚫ which is a group of disorders resulting from inadequate or delayed mineralization of osteoid in mature cortical and spongy bone. ⚫ Osteomalacia is characterized by abnormal quantities of osteoid coating the surfaces of trabeculae and lining the haversian canals in the cortex (osteoid seams). ⚫ Loosers zones or Milkmans pseudofractures are strongly suggestive but not diagnostic of osteomalacia .Frequently osteitis fibrosa cystica is superimposed on the lesions of osteomalacia. 3、Osteosclerosis ⚫ Which is an abnormal hardening or increased density of bone on radiographs. ⚫ Osteosclerosis may accompany a great variety of disorders, including hyperparathyroidism or renal osteodystrophy, osteoarthritis, sickle cell anaemia, Pagets disease, systemic mastocytosis, skeletal metastasis, myelofibrosis, oxalosis, leukaemias and osteomyelitis. 10min 15min 15min