<prompt> Pathological is seen in following except:RadiationAnaemiaOsteoporosisOsteomalacia  <response>: B i.e. Anaemia Pathological Fracture A fracture in an abnormal bone is referred to as pathological fracture. Abnormal bone means a bone rendered weak by a disease localized to a paicular hone, or by a generalised bone disorder. Bone that fractures spontaneously, or after tril trauma must be regarded as abnormal until proven otherwise. Veebral bodies thoracic lumbar are the most often affected bones fb neckfemur lower end radius colles . Most common cause is osteoporosisQ. Other causes of pathological fractures are: Localized Diseases Chronic infection eg. tubercular pyogenicosteomyelitis. Eosinophilic granuloma Benign neoplastic lesions- Solitary bone cystQ- Aneurysmal bone cystQ- Fibrous coical defect- Monostotic fibrous dysplasia- Chondromyxoid fibroma- Chondroma EnchondromaQ- Osteoclastoma giant cell tumor Malignant bone tumor- Osteosarcoma- Ewings tumor- Chondrosarcoma Atrophic bone due to- Polio- Radiation RadiotherapyQ Generalised Diseases Congenital Developmental- Osteogenesis imperfecta- Osteopetrosis- 011iers disease multiple enchondromatosis dyschondroplasia.- Polyostotic fibrous dysplasia- Histiocytosis X- Gauchers disease Acquired Disorders producing osteopenia- Osteoporosis most common causeQ- OsteomalaciaQ- Hyperparathyroidism- Renal osteodystrophy- Pagets disease- Myeloma Other metabolic bone diseasesQ- Rickets- Scurvy Disseminated malignancyin bones- Multiple myeloma- Myelomatosis- Metastatic carcinomaQ 2d m.c 