The main purpose of this study: \- to determine whether vertebroplasty has a pain palliating effect superior to a sham-procedure for acute painful osteoporotic vertebral fractures of the thoracic and lumbar spine. Secondary purposes: * To determine if there are differences in the two methods on preventing forward tilting of the spine and/or shortening of the total height of the spine. * measure if there are differences in change of lung capacity between the two methods
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Pain relief
Timeframe: 12 Months