[Effect of hypokinesia on the development of osteoporosis]

The skeletal changes in the rabbits exposed to a 90-day hypokineisa have been examined. Osteoporosis has been diagnosed using an X-ray investigation which included rentgen-densitometry and rentgen-grammetry. The process involved the thinning of the cortical layer and a decrease of the bone density. The importance of the above methods for an objective evaluatuon of osteoporosis is discussed.