Musculoskeletal ImagingHaversian system
the basic unit of structure in compact bone, consisting of a
haversian canal and the concentrically arranged lamellae of bone surrounding the canal. These units are secondary osteons with parallel-fibred bone.
In osteomalacia, the haversian systems become irregular and develop large channels. Osteoid seams may line the haversian canals in the cortex.
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