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Sacral Insufficiency Fracture

Basics Description Sacral Insufficiency fractures occur in the sacral ala between the SI joints and the neural foramina (Denis Zone 1). The fracture pattern adopts a characteristic H-shape, which is pathonemonic of the condition. It is postulated that the vertical limbs of the H occur 1st, followed by the transverse fracture line. In ~50% […]

Paget Disease

Basics Description First described by Sir James Paget in 1877 , Paget disease (osteitis deformans) is a bone disorder commonly seen in the geriatric population. As implied by the name osteitis deformans, the involved bone may be severely deformed and enlarged, features that suggest an inflammatory origin. A chronic and slowly progressive disease of […]

Osteoporosis

Basics Description Osteoporosis is characterized by low bone mass and microarchitectural deterioration of bone tissue, leading to enhanced bone fragility and an increase in fracture risk. The World Health Organization defines osteoporosis as a bone mineral density score 2.5 standard deviations less than the mean value for a young person of the same gender […]