US researchers have begun a clinical trial to evaluate the safety and effectiveness of the Kiva System, which is used for the treatment of painful vertebral compression fractures caused by osteoporosis.

The randomised and controlled trial will compare Kiva with balloon kyphoplasty for the treatment of these fractures.

The trial will enrol patients who have one or two osteoporotic spine fractures, are aged 50 or older, and those who have been unsuccessfully treated by conservative care for at least six weeks.

The results will be submitted to the US Food and Drug Administration for clearance in the US. The device has already been approved in Europe.