Experimental study on pain reduction mechanism of vertebroplasty for painful vertebral compression fracture

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In order to clarify the mechanism of the pain reduction of percutaneous vertebroplasty (Bone cement injection method) the animal experiments described below were performed. The vertebral compression fractures were made for the pigs, and three kinds of treatments were enforced to the compression fractures. That is, the cement injection, the bone punch formation, and the wire fixation were performed, and the difference of the therapeutic effect was observed. The bone punch formation group achieved only the effect equal with the treatment free group when judged from the result of obtaining from the image result and pig's breeding situation overall. Moreover, the metal wire treatment became equal to the bone cement treatment after the fourth day, though the initial therapeutic effect was excellent. Therefore, it turned out that the fixation with the wire or the bone cement more effective than the decompression of the vertebral body.