Natural cast made of SOMSO-Plast according to Prof. Dr. med. H. R. Henche of Rheinfelden. Comparison of an osteoporotic and a healthy lumbar vertebra. The vertebral bodies are divided frontally and can be opened by a hinged joint. Altogether 4 pieces. On base. Height: 8 cm., width: 21 cm., depth: 15 cm., weight: 0.26 kg.