Abbildung 2a-i: (a) 74-year-old man, fracture of the twelfth thoracic vertebra with osteonecrosis. (b) Closed reduction on the operating
table. (c) Postoperatively after BKP. (c) Collapse of vertebra after six weeks. (d) Further resorption and collapse after ten weeks.
(e) Second operation with BKP at the eleventh thoracic vertebra. (f) Further collapse and resorption six weeks after the second BKP.
(g) Third operation with VP at the first lumbar vertebra, cement leakage dorsally, no neurology. (i) Further collapse and resorption
six weeks after the third operation.
Keywords: mineral research