The distance between polymethylmethacrylate and endplate is an important risk factor of recompression of cemented vertebrae after kyphoplasty for patients with osteoporotic vertebral compression fractures.

Pain duration and age are predictive of estimated blood loss. Patient age is also predictive of the postoperative VAS back score.

preoperative values. Univariate analyses indicated a correlation of kyphotic angle reductions with cement volume used, cement volume leaked and pre-operative kyphotic angle. A final multiple linear regression model indicated a correlation between kyphotic angle reductions with cement volume used and pre-operative kyphotic angle. The conclusive multilinear regression model with all predicted independent variables amounted to a formula that account for 12% of variability in kyphotic angle reduction; pre-operative kyphotic angle (b = 0.195, p = 0.022) and cement volume (b =-0.194, p = 0.024). CONCLUSION: The preoperative kyphotic angle and cement volume used are the major predictors of kyphotic angle reduction postoperative.