P024 Histomorphometry of femoral head reveals new approach to biomechanics in osteoarthritis

Abstract

The structure is reported of bones of glacial-period mammals, which were found in 1973 to 1989 in gravel-sandy soil of the fossiliferous layer „Rixdorfer Horizont“ at Niederlehme near Königs Wusterhausen. The findings, probably, date from one of the interstages of the glacial period „Weichsel-Kaltzeit“ before the stage „Brandenburger Stadium“. Their embedding took place more than 20000 years ago. Changes of the deposit of bones and teeth from older sediments are not to exclude in the finding place Niederlehme. In the collection of findings with 102 skeletal parts are to define following species: Mammuthus primigenius, Coelodonta antiquitatis, Equus sp., Bison priscus, Megalocerus giganteus, Cervus elaphus, Rangifer tarandus and Canis lupus.A trajectorial direction of the trabecula in the substantia spongiosa is evident. There are also specific channels of blood vessels with different diameters. This channels have completely closed bone-wall (with a central venous sinus of diameter 5 to 10 mm) or in little vessels (diameter 1 to 3 mm), we have found many apertures to the rooms of the substantia spongiosa. The microscopical investigation of bones of Mammuthus primigenius has shown Havers' channels and perforating channels, Havers' systems and lacunae osseae.