Biomechanical comparative study on stability of injectable pedicle screw with 1 different lateral holes augmented with different volumes of polymethylmethacrylate in osteoporotic lumbar vertebrae

Polymethylmethacrylate (PMMA) is widely used for pedicle screw augmentation in osteoporosis. Until now, there had been no studies of the relationship between screw stability and the distribution and volume of PMMA.

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