<prompt> Loosers zone are seen in:Osteogenesis imperfectaOsteopetrosisOsteomalaciaHypoparathyroidism  <response>: Ans. c Osteomalacia. Ref. Grainger, Diagnostic Radiology, 4th pg. l933, 1949.MBKMANS FRACTURE LOOSERS ZONE UMBAU ZONE PSEUDO FRACTURE Focal accumulations of osteoid are seen in compact bone at right angles to long axis; radiographically, these are known as Loosers zones or pseudofractures or umbau zones Exact cause of loosers zones is unclear, although they probably represent partial insufficiency fractures. It is a distinguishing sign of osteomalacia, although they may occur rarely also in:- Pagets disease- Fibrous dysplasia- Osteoporosis rarely- Hyperphosphatasia- Osteogenesis imperfecta They are symmetrically distributed occur principally in:- Pubic rami,- femoral necks,- scapulae,- ribs,- long bones,- metatarsals. Other key imaging features of osteomalacia is:- Osteopenia,- intracortical resorption cortical tunneling,- coarsened, indistinct trabecular pattern,- bowing of bones,- true fractures, especially at the femoral neck. 