Pseudofracture

A pseudofracture is a diagnostic form of osteomalacia. Also called as Looser's zone. Pseudofracture occurs rarely in Paget's disease, hyperparathyroidism, Renal osteodystrophy, Osteogenesis imperfecta, Fibrous dysplasia, Hypophosphatasia A pseudofracture is a diagnostic form of osteomalacia. Also called as Looser's zone. Pseudofracture occurs rarely in Paget's disease, hyperparathyroidism, Renal osteodystrophy, Osteogenesis imperfecta, Fibrous dysplasia, Hypophosphatasia A band of bone material of decreased density may form alongside the surface of the bone. Thickening of the periosteum occurs. The formation of callouses in the affected area is also common. This gives the appearance of a false fracture. Typical sites of involvement are the axillary margins of the scapula, ribs, pubic rami, proximal ends of the femur and ulna.