[Band-like osteoporosis (author's transl)].

Atrophy of the skeleton due to inactivity may have two types of radiological change: diffuse decalcification and band-like porosis in the zones involved by previous growth. The type of decalcification is evidently determined by the vascular anatomy of the bones. This results in localised differences which are independent of age, the type of trauma or the duration of immobilisation.